In 1976 on a remote island, schoolteacher Eun-young wants to take her students on a field trip to a cookie factory in Seoul. Even though the parents don't like the idea, Eun-young succeeds in taking them. But once they arrive in the complicated city, students become fascinated with high-tech bicycles and get lost.

A youth romance drama that depicts the process of a man and a woman who were college lovers, breaking up in front of social reality and starting love again after becoming office workers.

Three years after the expiration of the ten year statute of limitations, police detective Ryoo Yi-jae meets the man who killed his son in a hit and run accident.