Lu Yu is a transfer student in his third year of high school. Not only is he handsome and versatile, but he's also very likable. But he is full of emotional contradictions and is a person with a dual personality. Lu Yu is very humorous, but in his heart there is a world that is different from the ordinary world. From the first time he met Ruo Lian, he felt that he liked her very much, and he would think that he might have fallen in love with her. But just when they became roommates and their relationship improved further, a person appeared who dared to love and hate. Kewei and Ruolian have been good sisters since they were young. Kewei is a girl with unwavering faith in matters of love. She fell in love with Lu Yu and decided to follow him from now on. In addition, her family members have a very advanced influence on her feelings, and the two families were good friends in the previous generation. She and Lu Yu can be regarded as childhood sweethearts. Several good friends who are fighting for their own destiny and love come together to stage a series of touching stories for the college entrance examination, for friendship, and for love.