Arisu—a listless, jobless and video-game-obsessed young man—suddenly finds himself in a strange, emptied-out version of Tokyo in which he and his friends must compete in dangerous games in order to survive. In this strange world, Arisu meets Usagi, a young woman who’s navigating the games alone. Together, they set out to unravel one mystery after another as they risk their lives and confront what it means to live.