Failing in Love

Pa Rang, Si Won, and Si Eon have been friends for ten years since elementary school. Pa Rang, who just turned 18, wants to make a girlfriend and asks every girl in high school out. In the end, he asks Si Won out who has liked him for ten years, but things don't go as he wants.

A girl named Hee Su asks Pa Rang's number at the comic book store, saying he's cute, and they plan to have a date. Mr. Black is worried about Geon, who's working every day after school to feed her family. Pa Rang and Si Won plan a surprise birthday party for Si Eon.

Si Eon takes Si Won to volunteer at a museum to spend time with her. Pa Rang finds himself depressed after his game account is hacked but later gets excited as he finds a new girlfriend. On the other hand, Si Won is disillusioned for not being able to hit it off with Pa Rang.

Si Won is confused after Si Eon kisses her and tries to avoid him for some time. Pa Rang gets dumped by his girlfriend and confides in Si Won. Meanwhile, the old rumor of Si Eon being gay like his older brother resurfaces and continues to spread around.

The class goes on a hiking trip, and Pa Rang ends up lagging. Si Won gets worried about him and goes looking for him. After many lessons of friendship and love, the students arrive at their senior year and take the long-awaited college entrance exam.