With his outstanding skills, Taesung, who is about to make his UFC debut, will be injured in a bar fight and lose his qualification as a player. Hyena, a BJ specializing in mixed martial arts and Taesung's female friend, finds out that the man who injured Taesung is Yang Ho-yeol, the champion of the illegal gambling game site "Blood Street," where he can bet after matching street fights. Taesung jumps in a mask on the "Blood Street" fight board only to avenge Yang Ho-yeol. Blood Street users are enthusiastic by calling masked Taesung "Real Fighter."