In an unusual suburban town, a peculiar phenomenon grips its residents. Driven by a deep longing, Shizuru Chikura yearns to reunite with her vanished friends. Together, they embark on a perilous journey beyond the town's confines, boarding a deserted and inert train with uncertain odds of survival. As the train hurtles towards an unknown destination, what mysteries and perils await them at its final stop on this ominous doomsday ride?