Jiang Mufan, who was born in a wealthy family, ranked first in the national exam. Despite his introverted personality, he was chosen as the monitor. He met Lin Luoyan, and even though he vowed not to fall in love sooner, he still made his heart beat. At the same time, the resident "bad boy" of Shao Tianyang's class also focused on Lin Luoyan. The arrival of Du Xinyue, a girl from a vocational school and daughter of a CD shop, also affected Lin Luoyan's rebellious and free character.