01 · THE SAME DOOR

A place at the table

At breakfast, Cass asked whether an official challenge had to arrive in writing.

“That depends,” Pandora said. “Have you already accepted it?”

“Not officially.”

Vega pushed the bread towards him. “He smiled at Jason. Apparently that counts.”

Tom had been watching a notice on his tablet. The same invitation had appeared on all six screens: western science building, nine o’clock. An integrated exercise. No preparation required.

“Fernand wants us in the laboratory,” he said.

“He usually does,” Max replied.

“Jason’s group too.”

That quietened the table.

Kala read the notice twice. “It says the room will open for everyone at the same time.”

Circe set down her cup. “Then arrive before it does.”

Outside, morning traffic threaded the channels. A maintenance vessel passed beneath their bridge, its deck stacked with dull grey components. Cass leaned over the railing to watch it disappear into shadow. From above, the city looked effortless. At water level, someone was always carrying something that needed replacing.

Jason’s group was already waiting when they reached the science building.

Nadia stood beside a sealed equipment trolley. Lyra was reading the exercise notice. Jason checked the wall clock as the six approached, but said nothing about their arrival.

At nine, the laboratory doors opened.

Fernand waited beside a circular table. Two identical sets of terminals faced a model archipelago, its miniature towers lit from within. Twelve access cards lay in a row.

“Same equipment,” Nadia said.

“Same instructions,” Fernand replied. “Same access to the room afterwards, if you want to review your work.”

“Afterwards?” Tom asked.

“You have had more time in this laboratory than some of your classmates. That should not depend on knowing whom to ask.”

Tom looked at Nadia. She was watching Fernand, not him.

“The booking arrangements will change,” the educator continued. “Today will not make every difference between you disappear. It can give us a fair place to begin.”

Jason picked up an access card.

“Then let’s begin.”

02 · A CITY IN MINIATURE

Enough power

The model represented a fictional coastal settlement. It had a clinic, a water plant, homes, a transport depot and workshops. Every district required electricity. There was enough for essential services, Fernand explained, but not enough to keep everything running at full demand.

“Your task is to maintain essential services for one simulated day. You cannot add generation. You may alter distribution, timing and storage.”

“And the winner?” Cass asked.

Fernand indicated the evaluation display. Continuity of essential services, safety and recovery time. The criteria were visible to everyone.

“Two independent attempts,” he said. “We compare the results afterwards. Nothing on this table controls the real city.”

Circe stood beside the physical control stations. The exercise included a manual route: a sequence of low balance platforms leading to a bank of isolation switches. Crossing quickly would help only if the correct switch was operated.

“You may stop,” she told them. “You may ask for a reading to be repeated. You may not touch a control you cannot identify.”

Max examined the platforms. “That last rule feels personal.”

“It is available to everyone.”

The first run began.

Tom mapped demand. Kala arranged the loads by time. Kira checked the clinic’s requirements while Vega questioned the automatic priority list. Cass took the manual station; Max handled messages from the simulated districts.

At the other table, Jason assigned responsibilities with clipped efficiency. Adrian checked the calculations, Lyra compared the sensor feeds and Selene sorted incoming requests. Dorian kept their reports short enough for Nadia to act on them.

For several minutes, both models stayed bright.

Then the tide changed.

Generation dropped. Workshop lights dimmed; the transport depot requested more power than it had been allocated. Cass crossed to the switches and stopped with his hand above the panel.

“Which feeder?”

Tom answered too quickly.

“Three.”

Kala turned her screen. “Three is the water plant.”

Cass withdrew his hand.

By the time they corrected the instruction, the depot had missed its scheduled charging window. Max’s screen filled with delayed journeys.

Across the room, Nadia completed her crossing and operated the correct switch on her first attempt.

Cass stared at the comparison display.

“Don’t watch them,” Vega said. “We still have a town.”

03 · WHAT THE SCORE MISSED

The missing journey

Near the end of the run, The Entourage restored the depot and recovered much of the lost time. Jason’s team finished ahead: fewer interruptions, faster recovery, no incorrect control commands.

Jason allowed himself a small smile.

“Same room,” he said.

“Good work,” Fernand replied.

Cass looked as though someone had asked him to swallow a stone. Kira touched his elbow before he spoke.

On Max’s screen, one message remained unresolved.

A maintenance crew had failed to reach the water plant. Its vehicle had been assigned to the depot during a charging delay. The water system was still running, but the next inspection had been missed.

“That’s after the finish,” Max said.

“The message arrived before it,” Kala replied.

At the other table, Selene looked up. “We have that request too.”

Fernand asked both teams to advance their models by another six simulated hours without changing their plans.

A warning appeared over each water plant.

The clinic’s electrical supply remained stable. Its clean-water reserve did not.

Jason read the new forecast. “The brief said one day.”

“It did,” Fernand said. “You won that comparison. This does not erase it.”

“Then why extend it?”

“Because the people using the system would still be there tomorrow.”

Silence settled around the table. Tom reopened the transport requests he had treated as secondary. Several had been ordinary journeys. One had not.

“We grouped them by district,” he said. “We should have checked what the journeys were for.”

“We checked,” Adrian said. “We assumed the inspection could wait.”

Nadia folded her arms. “So both of us need to fix it.”

“Yes,” Fernand said.

He joined the terminals to a single model and gave them twenty minutes.

“One settlement. Twelve people. Keep what worked. Change what didn’t.”

04 · TWELVE PEOPLE, ONE SYSTEM

A different kind of lead

The first minute disappeared into argument.

Jason wanted to preserve his team’s distribution plan. Vega wanted the transport priorities rewritten before anyone touched it. Cass insisted they could recover the lost time at the manual station. Nadia asked whether he intended to do that by running to the wrong switch faster.

“Enough,” Kira said.

Nobody stopped.

She turned down the speakers carrying the simulated traffic reports. The sudden quiet made everyone look at her.

“Selene has been trying to tell us something.”

Selene hesitated, then brought up a request from the workshops. Their high-demand machines could run later. The staff had offered a different shift, but neither team had opened the attached note.

“That releases enough power for the depot,” she said. “For forty minutes.”

“Thirty-eight,” Adrian corrected after a calculation.

“Thirty-eight, then.”

Kala moved the workshop load. Lyra overlaid it with the tide forecast, and the two bent over the same screen.

Tom waited for an opening.

“Jason. Can your plan hold the clinic while we recharge the maintenance vehicle?”

Jason examined the figures before answering.

“If you stop changing the storage allocation.”

“Show me which part needs to stay.”

Jason turned the terminal towards him.

At the manual station, Cass and Nadia checked the labels together. He repeated the instruction; she confirmed it against the diagram. Then they crossed the platforms in sequence, carrying out two separate operations without making speed a contest.

Max and Dorian took the district messages. Dorian found the relevant requests quickly. Max called each one back in plain language, checking what would happen if it waited.

“You’re less annoying when you’re useful,” Dorian said.

“You should hear me play guitar.”

“I have.”

Vega glanced up. “Both of you. The vehicle.”

The depot light changed. On the model, a small transport moved along the coastal road.

It reached the water plant with four simulated minutes to spare.

No one cheered immediately. They watched the inspection complete, then checked the next tide, the next shift and the clinic’s reserve.

Only when all three remained stable did Cass let out the breath he had been holding.

05 · AFTER THE CLOCK

The next question

Fernand saved both original runs beside the shared solution.

“Keep the mistakes,” he said when Tom reached to close a warning. “We will need them for the review.”

Jason asked for a copy of the results. Fernand sent the same complete record to all twelve students.

At the door, Cass caught up with Nadia.

“Your first crossing was good.”

She looked briefly surprised.

“Your second instruction was better.”

It was not quite a compliment. Cass decided to keep it anyway.

Tom waited beside Jason while the others collected their things.

“You were right about the storage,” he said.

“I know.”

Tom almost walked away.

Jason glanced back at the model. “You were right to ask about tomorrow.”

“Max found the message.”

“Then tell Max.”

There was no handshake. When they reached the corridor, however, Jason left enough space for him to pass.

Lyra remained beside Kala’s terminal. One line on the demand graph had caught her attention: a small, repeating dip in the source data, too regular to be explained by the workshop schedule.

“Did you put that in?” she asked Fernand.

He studied the timestamp.

“The exercise was built from anonymised maintenance records. Some irregularities belong to the original data.”

“Which records?” Tom asked.

“An older Arkadian service network. You can examine the teaching dataset. Nothing outside it without permission.”

“Tomorrow?” Lyra asked.

Fernand opened the new booking calendar.

There was room for both their names.

That evening, at District 199, Cass announced that they had lost, won, and probably lost an argument, all before lunch.

“A productive morning,” Pandora said.

Max took his guitar from its stand. “For the record, I found the message.”

“We know,” Vega said. “Tom told us twice.”

Kala sat at the synthesiser, but left her notebook open beside it. She had copied the shape of the dip from the graph. It appeared every forty-three seconds.

Across the channel, Arkademy’s windows reflected the last light. Somewhere beneath those bright buildings, old cables still carried the work of people the six had never met.

Tom looked at the note, then at the others.

“Tomorrow,” he said.

Vega counted them in.

This time, Max made his entrance.