Kim Gun-Woo (Woo Do-Hwan) and Hong Woo-Jin (Lee Sang-Yi) are back in the sport of boxing. Kim Gun-Woo is a promising boxer and dreams of becoming a champion. Im Baek-Jeong (Rain) appears in front of Kim Gun-Woo. Im Baek-Jeong is a powerful man and feared. He runs an underground gambling operation centered around boxing. Im Baek-Jeong tries to lure Kim Gun-Woo into his underground fighting world and doesn't hesitate to use any means necessary. Against Im Baek-Jeong, Kim Gun-Woo and Hong Woo-Jin decide to wipeout the illegal fighting ring.