High school student Jugyeong gets bullied by her classmates because they think she is ugly. When Jugyeong stands on the edge of a rooftop, a man saves her, thinking she is suicidal. Later, she must move houses and schools because of her father.

Jugyeong, wearing no make-up, encounters Suho at a comic book store. On Jugyeong's first day at a new school, her beautifully made-up face makes her popular, but she's anxious Suho will see the true face behind her make-up.

Suho saves Jugyeong, who almost exposes her true face. As a result, Jugyeong shows Suho her true face and tells him everything, and she becomes his errand girl. Seojun tells Jugyeong to return his helmet.

Suho and Seojun fight, and the school thinks they fought because of Jugyeong. Seojun notices that Suho likes Jugyeong, so he deliberately approaches Jugyeong.

Seojun approaches Jugyeong to annoy Suho, and Suho keeps his distance with Jugyeong to protect her. Jugyeong sees a junior getting bullied just like her, so she helps her.

Jugyeong is confused at Suho's cold attitude, and Suho feels sorry for Jugyeong. Jugyeong and Seojun become closer. However, Jugyeong soon encounters students who used to bully her.