Choi Ik-ho is a baseball player turned a WFC fighter after getting banned from the baseball league over an assault charge. He is enormously talented in fighting and soon becomes a superstar in the WFC. However, one day the police come to find him and tell him that Young-ho, his brother and manager who had gone missing, has been arrested as a prime suspect for a murder of a man who had visited Young-ho to suggest a game for Ik-ho. Ik-ho finds out that a genius criminal and gambler Ace had set everything up to control him. Now, Ik-ho must clear impossible missions to save his brother from the evil grip of Ace.