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Štyria tínedžeri pri technickom stole v školskej aule, Lea ovláda jemný cyanový prúd, Tami drží tiché pole, Viktor pracuje s káblom a Denis stojí otrasený vzadu.

neviditeľná minúta je nová časť seriálu Nultý signál, pripravená ako dvojjazyčný detský príbeh v slovenčine aj angličtine.

neviditeľná minúta: začína sa príbeh

V aule bolo už o ôsmej ráno dusno ako pred písomkou. Na stene viselo veľké plátno, pod ním stáli dve požičané reproduktorové skrine a pri stole s notebookom sa motali učitelia, deviataci aj členovia školského mediálneho krúžku.

Dnes sa mala konať prezentácia projektov pre rodičov, mestský úrad a pár ľudí z miestnej firmy. Pre väčšinu školy to znamenalo vynechané vyučovanie. Pre tých, ktorí na projektoch robili celé týždne, to znamenalo oveľa viac.

„Ak sa to pokazí, pán Kováč bude robiť pohrebný prejav nad projektorom,“ zašepkala Tami a upravila si slúchadlá na krku.

Obraz na plátne práve preskočil. Na sekundu sa ukázala prezentácia o čistení rieky, potom zelená tabuľka, potom sivé pruhy. Reproduktory zapraskali tak ostro, až sa niekoľko ľudí strhlo.

„To nebolo normálne,“ povedal Viktor ticho.

Stál pri technickom stole a stískal v prstoch kábel. V tvári nemal paniku, len čoraz väčšie sústredenie. Okolo neho hučali mobilné telefóny, školská wi-fi, bezdrôtové mikrofóny a ktoviečo ešte. Pre Viktora to nebol len hluk. Signály vnímal ako tlak v priestore, akoby sa miestnosť plnila neviditeľnými bublinami, ktoré sa navzájom tlačili.

„Je tam priveľa rušenia?“ spýtala sa Lea.

„Áno. Ale toto nie je obyčajné rušenie.“ Pozrel na zásuvky pri stene. „Niečo sa stále vracia. V pravidelných intervaloch.“

Pán Kováč sa zohol k notebooku a nervózne stláčal klávesy. „Kde je správca siete? A prečo mi nejde ani záložný kábel?“

Denis stál kúsok bokom, ruky vo vreckách bundy. Navonok vyzeral, že sa ho to netýka. Lenže jeho pohľad skákal od projektora ku káblom, od dverí k technickému stolu.

„Máte asi tri možnosti,“ povedal. „Vypnúť to, zapnúť to alebo sa na to dlho pozerať. Zatiaľ ideme všetky naraz.“

Lea naňho pozrela ponad rameno. „Neskúšaj byť vtipný.“

„Neskúšam. Len mapujem situáciu.“

Práve vtedy obraz zhasol úplne. V aule sa ozvalo nespokojné zamrmlanie. Za dverami už bolo počuť prichádzajúcich rodičov.

Denis sa narovnal. „Dobre. Tak to urýchlime.“

Lea ho zachytila za rukáv. „Čo presne chceš urýchliť?“

„Všetko. Kábel je vzadu, druhý adaptér je v sklade, správca je niekde na druhom konci budovy. Kým sa títo dohodnú, bude obed.“

„Ty nie si kuriér s turbo režimom,“ pripomenula mu.

„Možno som si to len zle zarámcoval.“ Denis sa jemne vyvliekol z jej ruky. „Po posledných pokusoch som zistil jednu vec. Keď to zopakujem viackrát, viem lepšie chytiť moment. Ako keby sa ten skok… nabíjal.“

Tami zdvihla obočie. „To znie ako veta, po ktorej sa v hrách objaví červený ukazovateľ a zhasne ti polovica života.“

„Veľmi povzbudivé.“

Viktor pustil kábel. „Nie som si istý, že je to nabíjanie. Skôr si len zvykáš na pohyb. A keď to preženieš, môžeš sa zaseknúť v—“

„Viem, čo sa stalo minule,“ prerušil ho Denis. „Nezabudol som.“

Potom sa odrazil od steny a rozbehol sa chodbou.

Jeho schopnosť nebola teleportácia. Nemizol v záblesku a neobjavoval sa na druhej strane budovy. Keď sa pohol určitým smerom, jeho telo akoby na krátky okamih preskočilo dopredu po vlastnej dráhe. Dva kroky sa zmenili na šesť. Pri správnom načasovaní to vyzeralo skoro prirodzene.

Najprv sa vrátil s predlžovacím káblom. O chvíľu nato sa objavil pri otvorenom sklade, kam učiteľka práve niesla krabicu s náhradnými adaptérmi. Potom zasa prebehol popri dverách a zachytil padajúci stojan na mikrofón skôr, než tresol o zem.

„Vidíš?“ zavolal cez plece. „Funguje to.“

„Funguje ti šťastie,“ odvetila Lea.

Na technickom stole sa však medzitým rozsvietila kontrolka a hneď zhasla. Pán Kováč zapojil druhý adaptér. Projektor na tri sekundy nabehol, no namiesto obrazu sa na plátne objavili roztrasené modré čiary.

Viktor sa chytil za spánok. „Znova ten tlak.“

„Tak ho odpojíme,“ povedal Denis.

„Počkaj,“ ozvala sa Lea. „Najprv zisti, čo je zapojené kde.“

Lenže on už bol v pohybe.

Keď sa veci začnú meniť

Preskočil ku káblom pri stene, potom ku dverám, aby odsunul stolík z cesty, a vzápätí späť. Chcel priniesť skrutkovač. Chcel zastaviť učiteľa, ktorý sa chystal odpojiť všetko naraz. Chcel byť pri notebooku skôr, než sa obraz znovu vypne.

Po treťom rýchlom skoku sa mu podlaha zvláštne naklonila.

Nie naozaj. Aspoň si to najprv povedal. Lenže dvere, ktoré boli pred chvíľou po jeho ľavej strane, sa mu zdali príliš ďaleko. Hlas pána Kováča prichádzal odkiaľsi spoza chrbta, hoci učiteľ stál rovno pred ním.

Denis zastal tak prudko, až sa tenisky pošmykli po linoleu.

„Kde je…“ začal, ale vetu nedokončil.

Chodba bola plná známych vecí: nástenka s fotografiami, hasiaci prístroj, okno, automat na nápoje. Napriek tomu mu nič z toho nesedelo na miesto. Priestor okolo neho sa neposúval, ale jeho mozog akoby nestíhal rozhodnúť, z ktorej strany k nemu prichádza.

Lea ho našla opretého o stenu.

„Denis?“

„Som v pohode.“

„To si povedal stene, alebo mne?“

Chlapec zavrel oči. „Kde sú dvere do auly?“

Tami, ktorá pribehla za Leou, sa prestala usmievať. Dvere boli sotva dva metre od neho.

„Napravo,“ povedala jemnejšie. „Úplne napravo. Nič nerob, hej?“

„Nerobím nič.“ Denis sa pokúsil odtiahnuť od steny, ale hneď sa jej znovu chytil. „Len sa mi… poprehadzovalo všetko.“

Viktor sa k nim dostal posledný. V preplnenej chodbe vyzeral bledšie než zvyčajne. „Neskákaj znova. Prosím. Máš po sebe viacero pohybových stôp, tak to aspoň cítim. Akoby si bol naraz na viacerých miestach, ale nie poriadne.“

„Perfektné,“ zamrmlal Denis. „Som rozbitá mapa.“

Z auly sa ozvalo ďalšie zapraskanie. Potom niekto zvolal, že sa prezentácia začne o desať minút.

Lea sa otočila k technickému stolu. Na okamih zaváhala. Mohla zostať pri Denisovi a kontrolovať, či sa mu to nezhorší. Mohla tiež utekať zachraňovať projektor. Ani jedna možnosť nebola dobrá.

„Tami, zostaň s ním,“ rozhodla napokon. „Viktor, poď so mnou. Len pomaly.“

„Pomaly je dnes podceňovaný luxus,“ povedal Denis, ale hlas sa mu zachvel.

Pri zásuvkách bolo viac káblov než ráno. Niekto pripojil záložnú lampu, niekto ďalší nabíjačku a vedľa ležal predlžovací bubon, cez ktorý viedol kábel pod koberec. Lea sa zohla.

V jej pohľade sa prúd ukázal ako jemné cyanové vlákna. Neboli jasné ako blesky. Skôr pripomínali tenké čiary svetla, ktoré sa mihali pod plastom a v medených žilách.

„Tu,“ povedala.

Jeden kábel bol napnutý tak, že jeho koncovka visela v zásuvke len napoly. Pri každom pohybe koberca sa kontakt na zlomok sekundy prerušil. Lenže okolo neho sa z času na čas objavil ešte slabý modrastý záblesk, ktorý nešiel ani z adaptéra, ani zo zásuvky.

Lea k nemu natiahla ruku, no nedotkla sa ho hneď.

„Vidíš to?“ spýtala sa Viktora.

„Nie očami.“ Zakryl si jedno ucho starým slúchadlom, hoci z nich nič nehralo. „Ale áno. Keď to blikne, všetky signály v miestnosti na sekundu stlačí k sebe. Ako keby niekto zatvoril päsť.“

Záblesk sa zopakoval.

Viktor sa mykol a musel sa oprieť o stôl. „To nie je školská wi-fi.“

„Výborne,“ zamrmlala Lea. „Lebo obyčajná porucha by bola príliš nudná.“

Opatrne položila dva prsty na plastový kryt rozvodky. Cyanové línie sa jej na okamih obtiahli okolo kĺbov. Necítila silu, ktorú by mohla vytvoriť. Len prúd, ktorý už existoval, a jeho neochotný smer.

„Potrebujem, aby nikto nehýbal káblom,“ povedala.

Tami sa objavila pri dverách. „Denis sedí. Pozerá na automat a tvrdí, že ho nikdy predtým nevidel.“

„Počuješ nás?“ spýtala sa Lea.

Ryšavé dievča prikývlo, no potom si stislo ucho. „Zatiaľ. Len tu všetci kričia naraz.“

Aula sa plnila. Učitelia sa snažili usádzať hostí, žiaci sa pýtali, čo sa deje, a reproduktor každú chvíľu vypľul krátke nepríjemné prasknutie.

Tami sa nadýchla. „Dajte mi pol minúty. Možno minútu, ak mi hlava neodíde na dovolenku.“

Dôležitý okamih

Rozprestrela ruky pri bokoch.

Zvuk nezmizol úplne. Len sa okolo technického stola stiahol, akoby niekto cez ruch prehodil hrubú deku. Hlasy zrazu zneli vzdialene. Praskanie stíchlo. Lea počula vlastné dýchanie a jemné šuchnutie Viktorovho rukáva.

„Teraz,“ povedala.

Viktor vytiahol napnutý kábel len o pár centimetrov, aby sa nezlomil. Lea presmerovala slabý prúd z jednej voľnej zásuvky do predlžovačky. Nebolo to elegantné riešenie. Bolo to skôr provizórne obídenie problému, ktoré by správca školy asi nechcel vidieť. No projektor naskočil.

Na plátne sa objavil úvodný obrázok rieky.

Tami okamžite spustila ruky. Zvuky sa vrátili naraz a dievča sa zachmúrilo, akoby jej niekto pustil hudbu priamo do hlavy.

„Fuj,“ povedala. „Teraz počujem aj to, ako niekto o dve rady ďalej žuje žuvačku.“

„To je dočasné?“ spýtala sa Lea.

„Dúfam. Inak začnem nenávidieť ľudstvo ešte pred obedom.“

Prezentácia sa rozbehla s oneskorením. Reproduktory nefungovali ideálne, preto moderátorka musela hovoriť hlasnejšie. Obraz občas preskočil, ale zostal na plátne. Niektorí rodičia tlieskali už pri prvom úspešnom slajde, akoby práve zachránili celé mesto.

Medzitým sa Lea vrátila za Denisom. Sedel na lavičke pri chodbe, lakte na kolenách. Viktor mu podal fľašu vody a on ju chvíľu len držal, akoby si nebol istý, či je naozaj v jeho ruke.

„Už viem, kde som,“ povedal bez pozdravu.

„To je dobrý začiatok,“ odvetila Lea.

Denis sa krátko pozrel smerom k aule. „Funguje to?“

„Tak napoly. Čiže presne tak dobre, ako funguje väčšina školskej techniky.“

Tami si sadla vedľa neho a opatrne si masírovala ucho. „Bez tvojho extra rýchleho chaosu by to možno fungovalo aj na tri štvrtiny.“

Čakal, že sa bude brániť. Bolo to na ňom vidieť. V očiach sa mu mihla pripravená ironická odpoveď, ale tentoraz ju nepustil von.

„Myslel som, že keď to budem robiť častejšie, dostanem sa do rytmu,“ povedal napokon. „Lenže po chvíli som nevedel, čo je predtým a čo teraz. Kde som skončil. Kde začínam.“

Viktor si prisadol na kraj lavičky. „To nie je tvoja chyba, že máš limit.“

„Je moja chyba, že som robil, že ho nemám.“

Na chodbe bolo chvíľu ticho. Nie Tamiino ticho, vytvorené silou. Len obyčajná medzera medzi slovami.

Lea sa oprela o stenu. „Nabudúce to povieš skôr.“

Denis sa na ňu pozrel. „Nabudúce?“

„Nabudúce sa určite zase niečo pokazí. Je to škola.“

Tami sa usmiala, hoci stále trochu krivo. „A my budeme mať plán. Taký, kde Denis nerobí osem vecí naraz a ja nemusím umlčať celú budovu.“

„Ja som umlčala len kúsok budovy,“ opravila sa sama. „Technicky.“

„Technicky si bola super,“ povedal Viktor.

Z auly sa ozval potlesk. Prezentácia o čistení rieky sa práve skončila a začínal ďalší tím. Pán Kováč prešiel chodbou, všimol si štvoricu pri lavičke a iba vyčerpaným hlasom povedal: „Neviem, kto čo spravil, ale ďakujem, že to aspoň ide.“

Keď odišiel, Denis sklopil zrak k teniskám. „Nemusíte mu hovoriť, že som sa tu rozbil o vlastnú schopnosť.“

„Nebudeme,“ povedala Lea. „Ale ty si to nebudeš volať rozbitie. Len si prestrelil hranicu.“

„To znie skoro normálne.“

„Nie je to normálne,“ povedal Viktor. „Ale nemusí to byť hanba.“

O niečo neskôr sa všetci štyria vrátili ku dverám auly. Projektor stále svietil. Zásuvka bola už zaistená páskou a cez káble viedla dočasná ochranná lišta. Správca siete konečne dorazil s kufríkom, tváril sa zmätene a hneď začal kontrolovať adaptér.

Lea však ešte raz pozrela na rozvodku.

Na jej povrchu sa mihol tenký cyanový záblesk. Taký rýchly, že by ho človek mohol pokladať za odraz svetla z plátna. Lenže Viktor vedľa nej stuhol.

„Cítil si to?“ spýtala sa.

Prikývol. „Bol to ten istý tlak. Krátky. A išiel… niekam von.“

Denis sa nevrhol ku káblom ani sa nerozbehol za zdrojom. Len sa postavil medzi nich, stále trochu neistý na nohách.

Čo sa ukáže neskôr

„Takže technika v škole nám práve máva?“

Tami sa pozrela na blikajúci projektor. „Dúfam, že nie. Lebo ja dnes už ďalší rozhovor s elektrinou nedávam.“

Za oknami prešla po sivom dvore sanitka bez sirény. V aule pokračovala prezentácia, niekto sa smial a na plátne sa objavila fotografia rieky pri západe slnka.

Potom záblesk zmizol.

Len Viktor ešte chvíľu hľadel smerom ku káblom, akoby pod školou alebo nad mestom práve niečo potichu odpovedalo.

Pokračovanie nabudúce…

Nabudúce: Objaví sa nové tajomstvo

The Zero Signal, part 4: The Invisible Minute

The Story Begins

By eight in the morning, the school hall was hot and tense, like before a test. A big screen hung on the wall. Under it stood two borrowed speaker boxes, and teachers, ninth graders, and members of the school media club moved around a table with a laptop.

Today was the project presentation for parents, the city office, and a few people from a local company. For most of the school, that meant no normal lessons. For the people who had worked on the projects for weeks, it meant much more.

"If this breaks, Mr. Kováč is going to give a funeral speech over the projector," Tami whispered, adjusting the headphones around her neck.

The image on the screen suddenly jumped. For a second, a presentation about river cleaning appeared, then a green chart, then gray stripes. The speakers crackled so sharply that several people flinched.

"That was not normal," Viktor said quietly.

He was standing by the technical table, squeezing a cable in his fingers. There was no panic in his face, only more and more focus. Around him, mobile phones, the school Wi-Fi, wireless microphones, and who knew what else were buzzing. For Viktor, it was not just noise. He felt signals as pressure in space, like the room was filling with invisible bubbles pushing against each other.

"Is there too much interference?" Lea asked.

"Yes. But this isn't ordinary interference." He looked at the sockets on the wall. "Something keeps coming back. At regular intervals."

Mr. Kováč bent over the laptop and pressed keys nervously. "Where is the network admin? And why isn't even the backup cable working?"

Denis stood a little apart, his hands in his jacket pockets. On the outside, he looked like it had nothing to do with him. But his eyes kept jumping from the projector to the cables, from the door to the technical table.

"You've got about three options," he said. "Turn it off, turn it on, or stare at it for a long time. So far, we're doing all three at once."

Lea glanced at him over her shoulder. "Don't try to be funny."

"I'm not trying. I'm just mapping the situation."

Just then, the image went completely black. An unhappy murmur rose in the hall. Through the doors, they could already hear parents arriving.

Denis straightened up. "Okay. Then let's speed this up."

Lea caught his sleeve. "What exactly do you want to speed up?"

"Everything. The cable is at the back, the second adapter is in storage, and the admin is somewhere on the other side of the building. By the time those people agree, it'll be lunch."

"You're not a courier with turbo mode," she reminded him.

"Maybe I just framed it wrong." Denis gently pulled free. "After the last few tries, I found one thing out. If I repeat it more times, I can catch the moment better. Like the skip… charges up."

Tami raised an eyebrow. "That sounds like a line from a game right before a red warning pops up and half your health disappears."

"Very encouraging."

Viktor let go of the cable. "I'm not sure it's charging. More like you're getting used to the movement. And if you push it too far, you can get stuck in—"

"I know what happened last time," Denis cut in. "I didn't forget."

Then he pushed off the wall and ran down the corridor.

His ability was not teleportation. He did not vanish in a flash and appear on the other side of the building. When he moved in a certain direction, his body seemed to jump forward for a brief instant along its own line. Two steps became six. With the right timing, it looked almost natural.

When Things Start to Change

At first, he came back with an extension cord. A moment later, he appeared near the open storage room just as a teacher was carrying a box of spare adapters. Then he rushed past the doors and caught a falling microphone stand before it crashed to the floor.

"See?" he called over his shoulder. "It works."

"Your luck works," Lea shot back.

Meanwhile, a light on the technical table blinked on and off. Mr. Kováč plugged in the second adapter. The projector started up for three seconds, but instead of an image, shaky blue lines appeared on the screen.

Viktor grabbed his temple. "That pressure again."

"Then we disconnect it," Denis said.

"Wait," Lea said. "First find out what's plugged in where."

But he was already moving.

He skipped to the cables by the wall, then to the door to push a table out of the way, and then back again. He wanted to bring a screwdriver. He wanted to stop a teacher who was about to unplug everything at once. He wanted to be at the laptop before the picture disappeared again.

After the third quick skip, the floor felt strangely slanted beneath him.

Not really. At least, that was what he told himself first. But the door that had been on his left a moment ago felt too far away. Mr. Kováč's voice came from somewhere behind him, even though the teacher was standing right in front of him.

Denis stopped so suddenly that his trainers slid on the linoleum.

"Where is…" he began, but did not finish.

The corridor was full of familiar things: a notice board with photos, a fire extinguisher, a window, a drinks machine. Even so, none of it seemed to fit. The space around him was not moving, but his brain could not decide where things were coming from.

Lea found him leaning against the wall.

"Denis?"

"I'm fine."

"Was that for the wall, or for me?"

He closed his eyes. "Where are the hall doors?"

Tami, who came running up behind Lea, stopped smiling. The doors were barely two meters from him.

"On the right," she said more gently. "All the way right. Don't do anything, okay?"

"I'm not doing anything." He tried to pull away from the wall, but then he grabbed it again. "Everything just… got mixed up."

Viktor reached them last. In the crowded corridor, he looked paler than usual. "Don't skip again. Please. I can still feel more than one movement trail on you. Like you're in several places at once, but not properly."

"Perfect," Denis muttered. "I'm a broken map."

Another crackle came from the hall. Then someone called that the presentation would start in ten minutes.

Lea turned back toward the technical table. For a moment, she hesitated. She could stay with Denis and check whether he was getting worse. She could also run back and save the projector. Neither choice was good.

"Tami, stay with him," she decided at last. "Viktor, come with me. Slowly."

"Slow is a deeply underrated luxury today," Denis said, but his voice shook.

At the sockets, there were even more cables than in the morning. Someone had plugged in a backup lamp, someone else a charger, and next to that lay an extension reel with a cable running under the carpet. Lea bent down.

In her sight, current showed up as thin cyan threads. They were not bright like lightning. They looked more like narrow lines of light flickering under plastic and through copper veins.

"Here," she said.

One cable was stretched so tight that its plug was only half in the socket. Every time the carpet moved, contact broke for a split second. But now and then, a faint blue flash appeared around it, and it did not come from the adapter or the socket.

An Important Moment

Lea reached out, but did not touch it right away.

"Do you see that?" she asked Viktor.

"Not with my eyes." He covered one ear with an old earbud, even though nothing was playing through it. "But yes. When it flashes, all the signals in the room get pressed together for a second. Like someone is closing a fist."

The flash happened again.

Viktor flinched and had to lean against the table. "That's not the school Wi-Fi."

"Great," Lea muttered. "Because an ordinary fault would be too boring."

Carefully, she laid two fingers on the plastic cover of the power strip. Cyan lines wrapped around her knuckles for a moment. She did not feel power being created. Only the current that already existed, and its unwilling direction.

"I need no one to move the cables," she said.

Tami appeared in the doorway. "Denis is sitting down. He's looking at the drinks machine and says he's never seen it before."

"Can you hear us?" Lea asked.

The red-haired girl nodded, then pressed a hand to her ear. "For now. But everyone here is shouting at once."

The hall was filling up. Teachers were trying to seat the guests, students kept asking what was happening, and every now and then the speaker gave off a short ugly crack.

Tami took a breath. "Give me half a minute. Maybe a minute, if my head doesn't go on holiday."

She spread her hands at her sides.

The sound did not disappear completely. It only pulled back around the technical table, like someone had thrown a thick blanket over the noise. Voices suddenly sounded far away. The crackling faded. Lea could hear her own breathing and the soft rustle of Viktor's sleeve.

"Now," she said.

Viktor pulled the tight cable out a few centimeters so it would not snap. Lea redirected the weak current from one free socket into the extension lead. It was not elegant. It was more like a temporary fix that the school caretaker would probably hate. Still, the projector came back on.

The first image of the river appeared on the screen.

Tami dropped her hands at once. The sounds rushed back all at once, and she frowned as if someone had shoved music straight into her head.

"Ugh," she said. "Now I can hear someone chewing gum two rows away."

"Temporary?" Lea asked.

"I hope so. Otherwise I'm going to start hating humanity before lunch."

The presentation started late. The speakers still were not perfect, so the presenter had to speak louder. The image jumped now and then, but it stayed on the screen. Some parents even clapped after the first successful slide, as if they had just saved the whole city.

Meanwhile, Lea went back to Denis. He was sitting on a bench in the corridor, elbows on his knees. Viktor handed him a bottle of water, and for a moment Denis only held it, as if he was not sure it was really in his hand.

"Now I know where I am," he said without greeting.

"That's a good start," Lea replied.

Denis looked briefly toward the hall. "Is it working?"

"Half and half. So, exactly as well as most school tech."

Tami sat down beside him and carefully rubbed her ear. "Without your extra-fast chaos, it might have worked three quarters of the way."

He expected her to argue back. It was clear on his face. An ironic answer flashed in his eyes, but this time he did not let it out.

"I thought if I did it more often, I'd get into the rhythm," he said at last. "But after a while, I couldn't tell what came before and what came now. Where I ended. Where I started."

What Comes Next

Viktor sat down on the edge of the bench. "That doesn't mean you're weak. It means you have a limit."

"It's my fault for pretending I didn't."

For a moment, the corridor was quiet. Not Tami's kind of silence, made with power. Just an ordinary pause between words.

Lea leaned against the wall. "Next time, you say it earlier."

Denis looked at her. "Next time?"

"Something will go wrong again. It's a school."

Tami smiled, though it was still a little crooked. "And we'll have a plan. One where Denis doesn't do eight things at once and I don't have to shut up the whole building."

"I only shut up a part of the building," she corrected herself. "Technically."

"Technically, you were awesome," Viktor said.

Applause sounded from the hall. The river-cleaning presentation had just ended, and the next team was starting. Mr. Kováč came down the corridor, noticed the four of them by the bench, and only said in a tired voice, "I don't know who did what, but thanks for at least making it work."

After he left, Denis lowered his eyes to his trainers. "You don't have to tell him I broke myself against my own power."

"We won't," Lea said. "But you won't call it breaking yourself either. You just went past the limit."

"That sounds almost normal."

"It's not normal," Viktor said. "But it doesn't have to be shameful."

A little later, all four of them went back to the hall doors. The projector was still on. The socket had been secured with tape, and a temporary cover strip ran over the cables. The network admin finally arrived with a case, looked confused, and immediately started checking the adapter.

Still, Lea looked once more at the power strip.

A thin cyan flash flickered on its surface. It was so quick that a person could have taken it for a reflection from the screen. But Viktor froze beside her.

"Did you feel that?" she asked.

He nodded. "It was the same pressure. Short. And it went… somewhere out."

Denis did not rush to the cables or run after the source. He only stood between them, still a little unsteady on his feet.

"So the school tech is waving at us now?"

Tami looked at the blinking projector. "I hope not. Because I am not doing another talk with electricity today."

Outside the windows, an ambulance drove across the gray courtyard without its siren. In the hall, the presentation went on. Someone laughed, and on the screen a photo of the river at sunset appeared.

Then the flash disappeared.

Only Viktor kept staring at the cables for a while longer, as if something under the school or above the city had just answered quietly back.

To be continued…

Next time: A new mystery appears