Ruan Yuanyuan had a one-night stand with Fu Yanshen by accident five years ago when she was overweight. Five years later, she returned to the capital with her son Ruan Nuan, and after saving Fu's mother, entered into a flash marriage with Fu Yanshen. Fu Yanshen, cold on the outside and warm on the inside, gradually discovered that Ruan Yuanyuan was the woman from back then and that Ruan Nuan was his biological son. After going through twists and turns such as Lin Yu's instigation and poisoning, the two resolved their misunderstandings, fell deeply in love, held a supplementary wedding ceremony, and lived a complete and happy life as a family of three.