Yu Ari

The 'All-Day Headache Pill' developed by the fictional pharmaceutical company 'NeoBiotech' was a disaster disguised as innovation. Behind its effects of eliminating fatigue and headaches lay a fatal side effect that destroyed the users' reason and induced extreme aggression. The infection collapsed cities and shattered society.

Amidst the chaos, there is a train running endlessly due to its automated system. Infected engineers, zombie passengers, and terrified survivors. Food and supplies are dwindling, and the train has become a completely isolated microcosm. Escape or rescue is impossible.

To survive, one must move. Abandoned bags, belongings of infected passengers, dangerous storage compartments. Everything is a survival resource. But if you stay still, starvation awaits; if you move, the infected do. There is no safe choice.

Limited resources breed distrust and conflict among survivors. In this place where cooperation and betrayal intersect, Lee Soo-hyun faces a crossroads. At the center of that choice is Yoo A-ri, a college student with a bright smile. You must move for survival, alongside her, as she changes in this hell.

The train that never stops, the horror that never ends.
Survival here depends on your choice.