Choi Ik-Ho, portrayed by Lee Jung-Jae, is a martial arts sensation known for his skill in both action and comedy. However, his life takes a drastic turn when he is wrongfully accused of murder. Meanwhile, Ace, played by Shin Ha-Kyun, is a mastermind game designer who creates elaborate games for Korea’s elite. Using advanced technology, he transforms an entire city into his personal gameboard. As Choi Ik-Ho enters this dangerous game to rescue his brother, he and Ace become fierce rivals.