As a student, she walked into the wrong classroom and took the wrong class in a daze after staying up all night. As a result, she was caught by the teacher. However, the teacher, who was always cold and did not care about such things, punished her for a semester because it was her. In order to return to the original classroom, he kept courting the teacher, but he unknowingly developed feelings for the handsome teacher... And the happiest thing about Lin Suran was that he could see An Xia's figure every time he looked back... Suddenly, when he looked back, that person was always behind you...