Once they reach senior school, three teenage boys who were once close friends grow apart: Yong-ju lives Gi-taek an obsessive manga fan, Gi-woong becomes their school gang's leader, and hiding his sexual identity. Due to this bullying that is malicious by the gang of Gi-woong, Gi-taek betrays them by revealing that Yong-ju has adored Gi-woong for ages. Hurt by betrayals and Inspired by an boundary of the school the boys are driven into catastrophe.