During college, the chubby girl Cheng Qingmiao had a secret relationship with Pei Huaiyu. Upon hearing Pei Huaiyu say he was just playing around with her, she decisively and unilaterally broke up with him. Seven years later, Cheng Qingmiao had slimmed down, changed her name to Ni Wu, and brought her daughter Suisui, who had a heart condition, to see a doctor—only to find that the doctor was Pei Huaiyu. Pei Huaiyu kept seeing traces of Cheng Qingmiao in Ni Wu and gradually fell deeper...