Chunhoo Kang lives in a world of crime, sex and intrigue. He's the Nihon Saikono Warrior, Japan's greatest fighter in the yakuza underworld. However, he's also Korean. He holds the title through Shi-Nan-Joo, a powerful and ancient martial arts from Korea. Haunted by past sins, Chunhoo abandons his crime life to search for the young woman and son he abandoned decades ago. His yakuza bosses are unforgiving. They want his honor and title back. Assassins trail him all the way back to Korea and Chunhoo resolves that he's not going to be anybody's servant anymore. He's going to become an Emperor, standing at the apex of his own empire. Who is the Emperor that Chunhoo seeks to become? Will he be for good or evil?