Hundreds of cash-strapped players accept a strange invitation to compete in children's games. Inside, a tempting prize awaits — with deadly high stakes.

Action & Adventure, Mystery, Drama

Lee Jung-jae (Seong Gi-hun / Player 456), Wi Ha-jun (Detective Hwang Jun-ho), Yim Si-wan (Lee Myung-gi / Player 333), Jo Yu-ri (Kim Jun-hee / Player 222), Lee Byung-hun (Front Man / Hwang In-ho), Park Gyu-young (Kang No-eul / Guard 011), Kang Ae-sim (Jang Geum-ja / Player 149), Yang Dong-geun (Park Yong-sik / Player 007), Park Sung-hoon (Cho Hyun-ju / Player 120), David Lee (Park Min-su / Player 125), Song Young-chang (Im Jeong-dae / Player 100), Kang Ha-neul (Kang Dae-ho / Player 388), Lee Jin-uk (Park Gyeong-seok / Player 246), Chae Kook-hee (Seon-nyeo / Player 044), Choi Gwi-hwa (Kim Gi-min / Player 203)