'Sang-gu', a street fighter who is stronger than everybody else, grows increasingly frustrated due to lack of proper opponent. Meanwhile, his friend 'Moon-jae' gets into a fight with the 'Minguk' gang at his mother's shop.Sang-gu decides to transfer to Seolhan in search of stronger opponents and to seek revenge for his friends. Seolhan, the only school in Korea specializing in fighting, recruits the annual league winner as Road FC.To become stronger, Sang-gu fights againsts different martial arts sports, learns each of the advantages, and advances on to the final round... Watch drama online for free.