Even today, Jung-Woo is bullied by the Jae-Sung gang. It's called the Shuttle tournament. It's a game to pick the winner by fighting between school shuttles. It's just a game for them, but Jung-woo is in the dark. He asks his uncle who runs the gym to teach him how to fight, but he is rejected again today. Then one day, Jung-woo happens to see Min-a, a transfer student, and he falls in love with her at first sight. And she also came here to avoid school violence and finds herself in the same situation as Jung-Woo. Jung-Woo has a new goal. It's about protecting her! He makes himself a promise that he will build a school without a shuttle. And his top priority is to win the shuttle tournament and knock down Jae-sung.