A scarlet invitation tears reality apart, dragging emergency room nurse Li Feifei into the “Boundless Game.” The first challenge is an abandoned sanatorium: she has 72 hours to find a nurse’s duty log from thirty years ago. A shadowy figure watches from the mirror, man-eating vines lurk beneath the hallway handrails, and a butcher in a black coat advances with a surgical knife. Each of the eight players has their own objective, and failure means becoming a permanent part of the sanatorium. When rules collide with human nature, who can survive in these fragments of rotting time?