ARC 3

아크 3: 관제사

Five cases, strung on one thread in publish order. The thread's color is the paywall.

5 cases are connected in release order. No cases are owned yet.

The Vacant Slot

In the shaft of a mechanical parking tower attached to a downtown office building—the vertical passage where cars ascend and descend—parking facility safety inspector Kim Dong-ju was found dead at the bottom, having fallen. That night he had come out to verify a report that the shaft's safety gate sometimes failed to close on time, and was leaning in between the pallets—the platforms that lift and move vehicles—to inspect the shaft interior. The tower was still operating normally right up to the moment of the accident, and as he leaned forward, one pallet descended on command—but the safety gate that always stopped people and equipment failed to deploy that one time. Interrogate the five people entangled in this death and determine whose hand executed that retrieval.

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Locked Cold

Yang Hyeon-sik, secretary of the frozen logistics labor union preparatory committee, was found dead from oxygen deprivation in a low-oxygen refrigeration chamber—a sealed facility compartment designed to trap cold air—at an automated frozen logistics sub-terminal. Late that night, he had entered the chamber to verify that the emergency release mechanism opened and closed properly, and the terminal was operating normally even immediately after the incident. There were no malfunctions in the cooling and nitrogen systems, and the chamber had been sealed according to shift-end procedures—except the emergency release mechanism, which was supposed to open from inside, did not open. Interrogate the five people involved in this death and determine whose hand locked that chamber.

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Rinse

At a 24-hour automatic car wash tunnel, shift foreman Kim Ki-su was found dead, his chest and abdomen crushed between the conveyor and rotating brushes. That night he had walked into the tunnel himself, standing at the designated sensor position to assist with a pass-through test, and the human-detection safety interlock—which should have stopped the line the instant a person entered—never engaged during the cycle. The car wash remained open for business right up to the moment of the accident. Interrogate the five people entangled in this death and uncover why the hand that started that cycle turned it into a killing.

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Remote Authorization

At one of the electric scooter battery swap stations scattered across the city—a charging bay where riders dock their equipment one unit at a time—labor representative Park Jae-seok was found dead by electrocution. That night he'd been making rounds through unmanned swap stations, inspecting electrical safety interlock faults in the charging bays, and the station had been operating normally right up until the accident. The moment current flowed into the bay, the safety interlock that should always be engaged was off. Interrogate the five people entangled in this death and determine whose hand sent power into that bay.

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The Hand in the Tower

Han Yun-seong, an external labor and safety auditor tasked with verifying compliance at outsourced sites for Ullyeok—an app bundling multiple life services—was found dead late one rainy summer night in the break room adjoining the Integrated Control Center. Cause of death: acute cardiac arrest. He suffered from angina, a condition causing chest pain from insufficient blood flow to the heart. When an attack struck, he always carried nitroglycerin, an emergency vasodilator. The sublingual tablets he kept on his person were not among his belongings but in a drawer across the hall in the control room. The break room's emergency call terminal registered no outgoing signal that night, and the door would not open from inside. He had been digging into four outsourced operations—valet, late-night logistics, car wash, battery swap—and was universally resented, yet every finding he made was correct. He was the sole external check on labor safety across those four sites. That night's session was the final audit interview stipulated by contract. Interrogate the five people who remained in the control center at that hour and determine who led him to his death.

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