During an operation, policewoman Bai Jinxi (played by Yang Rong) met the mysterious man Han Chen (played by Bai Yu), and many misunderstandings arose between the two. Bai Jinxi later learned that Han Chen was also a criminal policeman, and later became her partner to solve strange cases together. In the process, Bai Jinxi witnessed Han Chen's superb IQ and amazing courage. Han Chen was also overwhelmed by Bai Jinxi's heroism, and the distance between the two hearts was getting closer and closer. However, an accident in the past caused Han Chen to lose some of his memory, and also caused him and his fiancée in his memory to be separated. In order to protect this memory, Han Chen subconsciously avoided his feelings for Bai Jinxi. In the end, Bai Jinxi's persistence and affection made Han Chen decide to open his heart. But before that, Han Chen still had one thing he had to do, which was to find out the truth about his amnesia.