In 2009, Bok Su, who is very popular among his school friends but bad at studying, and Soo Jeong, who is known to be the prettiest and smartest girl in Seolsong High School, get to team up and to improve Bok Su's grades. Soo Jeong's private lesson makes Bok Su interested in studying, and Bok Su realizes that his feelings for Soo Jeong have started to grow.
한순간의 오해로 끝나버린 9년 전 첫사랑을 우연히 다시 만난 복수와 수정.
12월 한 겨울에 찾아온 엉뚱 따뜻 학원 로맨스
