Gao Gongle (Andy Lau) was originally a doctor. He often neglected his family because he was too devoted to his work. It was not until his wife Liang Ziqing (Charlene Choi) died in an accident that he realized the importance of his family to him. He changed his job to become a paramedic and lived a regular life, but his longing for his wife has never diminished. Sam (Charlie Young) suffers from a serious heart disease. The heart donated by Mrs. Gao after her death gave her a new life, but she began to be suspicious of her husband Derek (Andy Lau) from then on, which eventually led to the other party being unable to bear it and leaving her. Sam's transplanted heart had a big problem and was in critical condition. Gao Gongle accidentally discovered that she was very similar to himself a few years ago, so he decided to find Derek's whereabouts for her. Gao Gongle's actions also made Sam understand what true love is.