In a world where humanity has lost the ability to dream in exchange for eternal life, one creature remains entranced by the fading illusions of the dreamworld. This monster, adrift in reverie, clings to visions no one else can see - until a woman appears. As she allows him to dream one final time, his life of different identities is replayed as they journey through his century of existence.

Dedicated police detective Ma Zhe is tasked with solving a series of brutal murders in a rural Chinese town. As pressure mounts from his superiors, a hasty arrest is made, but while his colleagues celebrate, several clues push Ma Zhe deeper into a desperate investigation of his own.