In the midst of teenage angst, Woojung's sophomore year takes an unexpected turn after a run-in with Sera, a rebellious and foul-mouthed classmate. Their confrontation escalates into a misunderstanding, drawing Woojung into a complex web of relationships with a group of depressed high school juniors. As Woojung navigates the intricacies of his new friendships, he must confront the challenges of adolescence and the complexities of his own emotions.