Xia Qingying, a senior girl in a business school, is obsessed with music, but because of her mother's wishes, she missed her dream. During her four years in college, she had a mad crush on someone, but when she finally plucked up the courage to confess her love, he refused. He said that he was used to being alone, but the next day he got engaged to his best friend.
Lu Ran, a senior boy in the music department and the number one talent at Donghua University, met the girl who made his heart beat in a coffee shop because of his cousin's invitation, but he didn't know that the girl he liked was secretly in love with his cousin.
A nocturne created an inseparable connection between them. Because of Lu Ran, Xia Qingying regained her dream, but what should she do in the face of her mother's opposition? How should she choose between Lu Ran, who was infatuated with her, and the person she had loved for four years?