A crowded evening Seoul subway car before the apocalypse, fluorescent lights and phone screens casting normal city glow.

The same subway car, still ordinary. Jae-Hyun finds Min-Su among the crowd.

The Star Stream begins. Every screen in the subway is hijacked by the same message.

The first Star Stream tutorial explains the game-like apocalypse in the trapped subway.

The subway doors open into the tunnel, and the first hints of Coin Hounds appear.

The first attack hits the subway car and proves the Scenario is lethal.

Min-Su realizes he has no combat ability and almost no audience.

Jae-Hyun spots the maintenance safe room and organizes the survivors.

Min-Su tries to contact Seo-Yeon while the safe room fills.

The safe room is almost full, but slow survivors are still outside and the hounds are close.

The Architect of Betrayal makes first contact through a hidden sponsor window visible only to Min-Su.

Min-Su rejects the offer while the safe room situation deteriorates.

The Architect shows Min-Su a cross-district feed of Seo-Yeon under attack.

Min-Su tries to bargain for another solution, but the system and sponsor frame betrayal as the only available option.

Min-Su accepts the offer and locks the door early.

The door seals, trapping people outside, and the promised weapon appears.

A hound breaks into the safe room despite the sealed door, and Min-Su uses the weapon to kill it.

The betrayal goes viral among celestial viewers.

Jae-Hyun starts to understand that the locked door was not an accident.

The Architect offers extra payment if Min-Su lies convincingly.

Min-Su lies to Jae-Hyun and performs indifference for the stream.

The tutorial Scenario ends, but Min-Su’s reputation is already changing.

Min-Su tries to use the reward for Seo-Yeon while Jae-Hyun distances himself.

Min-Su is publicly branded by the stream as betrayal content while the Architect claims him as a sponsored channel.