这一切都始于Run的那一天，一个喜欢骑摩托车的固执的小男生遇到了一个陌生人，并接受了他的挑战。跑步和陌生人进行了一场街头比赛，但是一次事故让跑步失去了知觉。这个陌生人很快帮助他进行人工呼吸。那是Run和Mike的初吻。命运让他们再次相遇。Run在找车间的时候，发现Mike是个摩托车技工。随着他们越走越近，他也发现Mike已经有了一个女朋友。当被自己的感觉弄糊涂的时候，Mike意外地看到Run亲吻另一个人，巴斯，这伤害了他。当Run遇到承诺和他一起比赛的金时，事情变得复杂了。迈克和润之间的竞争即将加剧。 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.
