The male protagonist, Shao Xiaofeng, is an ordinary high school student. Although his mother was seriously ill, he managed to live a normal life. But things changed with the appearance of a transfer student named Dai Ziling. What is the secret behind her? The story unfolds between Shao Xiaofeng, Dai Ziling, Shao Xiaofeng's sister Xiaoya and the monitor of Shao Xiaofeng's class.