No-eul infiltrates a dangerous operation with a risky plan. A new game is announced: hide-and-seek, where one group holds a key and the other a knife.

Cast: Lee Jung-jae, Lee Byung-hun, Wi Ha-jun, Yang Dong-geun, Kang Ae-sim, Yim Si-wan, Jo Yu-ri, Kang Ha-neul, Park Gyu-young, Park Sung-hoon, Lee Jin-uk, David Lee