The film follows the lives of four childhood friends: Joon-seok, the leader of the group whose father is a powerful mob boss; Dong-su, whose father is an undertaker; class clown Jung-ho; and Sang-taek, who was an exemplary student. As children, they play together and sell sexually explicit pictures. In high school, they become smitten with the lead singer of a girl band their age. Joon-seok invites the band to a party at his house, where Sang-taek receives his first kiss from the lead singer, Jin-sook.