First generation K-pop boy group Sechskies look back on their 18 years as a K-pop idols and prepare for their 20-year anniversary.

First story. Ye-jin is a high school junior from a wealthy family who also does very well in school. But her secret aspiration is to be a back dancer. Although her boyfriend Sang-rok is the class president and a good student, he is very passive. Ye-jin gives up her dreams of back dancing and decides to leave for Canada. Before she does, she gives Sang-rok a farewell kiss. Jun-tae is a problem student with a heart of gold. He quits school for good after he gets into a fight with the Dae-gon the top student at school. Second story. Jun-tae becomes a street kid hustling customers for a local bar. He develops a crush on a fellow street kid named Gigi. Jong-su, born poor and illegitimate, carries a giant chip on his shoulder. He is part of a motorcycle gang and is going out with Titi who works at the local gas station. The two couples take off to the East Sea for a getaway but are tracked down by men sent by Jong-su's father.