It all starts on the day on which Run, a stubborn young boy who loves to ride motorcycles, meets a stranger and accepts his challenge. Run and the stranger have a street race, but an accident leaves Run unconscious. The stranger quickly helps him by reanimating him. That is Run and Mike's first kiss. Fate makes them meet again. While looking for a workshop, Run discovers that Mike is a motorcycle mechanic. As they grow closer, he also finds out that Mike already has a girlfriend. While being confused by his own feelings, Mike accidentally sees Run kissing another guy, Bus, and that hurts him. Things get complicated when Run meets King, who promises to race alongside him. The competition between Mike and Run is about to intensify.