Three years after winning the Squid Game, Seong Gi-hun returns—not for the money, but to tear the entire operation down from the inside. He re-enters the dormitory wearing the same green tracksuit, carrying the weight of 455 ghosts. The Front Man, In-ho, follows his predecessor's footsteps and joins the games as Player 001, pretending to be an ally while waiting for Gi-hun to break.