Detective Ryoo Yi Jae lost his beloved son in a hit-and-run accident. Without finding the criminal, the statute of limitations passed and the family collapsed. He was transferred to Namwon after drinking alcohol to soothe his exhausted daily life. When he was about to live a new life from meeting Eom So Hyun, he ran into Im Hak Chon by chance, the murderer of his son.

一次偶然中，单纯善良的夏亭（韩孝珠 饰）结识了名为洙旭（李英勋 饰）的男子。夏亭喜欢上了成熟稳重的洙旭，想方设法的接近他。夏亭知道洙旭喜欢骑自行车，于是，丝毫没有运动神经的夏亭也开始学起了骑自行车，就这样，洙旭成为了她的教练，随着时间的推移，两人之间的距离在慢慢靠近。 尽管洙旭对夏亭抱有好感，但他却无法忘记瘫痪在床的前女友，而夏亭亦被往事折磨，她的母亲因为酒精中毒去世，陷入绝望之中的父亲则开始依赖酒精，并将怒火发泄到夏亭和她年幼的弟弟身上。两个伤痕累累的人，想要靠近，却又有着太多的顾虑，或许骑上单车，便能逃离这沉重的一切，到达无限自由的未来。