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

Starring Lee Jung-jae, Lee Byung-hun, Yim Si-wan, Wi Ha-jun, Kang Ha-neul, Park Gyu-young, Lee Jin-uk, Park Sung-hoon, Yang Dong-geun, Kang Ae-sim