A romantic comedy about the complex subtle feelings of two men and women as lovers who break up and are forced back in front of cameras 10 years later due to the popularity of a documentary they shot in high school.

A story of a boys' badminton team at a middle school in Haenam as they compete in a junior athletic competition. The 16 year old boys and girls in Haenam grow as people during this time.

A mysterious case happened, involving a serial killer with a claw hammer. Detective Dong Baek and Profiler Han Sun-mi separately chased the culprit.