Martial arts master 'Yushin' goes undercover at Serigo High School at the request of detective 'Muho'. His mission is to take down gang members within Serigo. Meanwhile, 'Buk', who has been living diligently as the sole breadwinner for his family, is targeted and bullied by the school's top power, 'Manho's' gang. Witnessing this, 'Yushin' devises a plan to eradicate the gangsters with 'Buk's' help, and 'Buk's' world begins to shake... Will those with 'power' submit to fate, or defy it?