S1, E1: Kang Hyuk, a born fighter spends his time with Jae Wook and Bon Hwan in their hideout. One day Hyuk's friends rescue Kyu Soon who has been bullied by Dang Young high school gangsters and Kyu Soon becomes their friend. One day, Hyuk helped Tae Jin who cannot fight because he is the most promising player of Dang Young high school’s wrestling team. Gangsters find out that someone is taking care of Kyu Soon behind him and get furious. They set schemes for the revenge against Kyu Soon and his friends.