Eun-woo, who is a quiet and timid personality, does not trust people because of the wounds he received from Seung-han, his unrequited love. He decided to return to school only after hearing the news that Seung-han had graduated, but he is still running around the school due to trauma. Jae-ho, a freshman who approaches him. Whenever Eun-woo sees Jae-ho, who is popular and handsome, he thinks of Seung-han and wants to keep his distance, but Jae-ho, who is interested in Eun-woo, keeps treating him kindly. Meanwhile, Seung-han was in a state of not being able to forget Eun-woo, and when he heard about Eun-woo from his friend, he went to find him…