Chi Ming (played by Li Youbin) is a criminal policeman. In his work, he is experienced and conscientious. He is a reliable partner. In life, he is full of interest, knows how to enjoy, and is the perfect companion. Chi Ming once had a relationship with a woman named Xu Ruofeng (played by Yu Xiaohui). Unfortunately, the destined two eventually parted ways because of a misunderstanding. Although they had separated long ago, Chi Ming never forgot Xu Ruofeng. What Chi Ming didn't expect was that Xu Ruofeng, who had originally thought he would never see each other, turned out to be his direct boss. When feelings and work are entangled, how should Chi Ming deal with his inner restlessness? And Xu Ruofeng's heart, like Chi Ming, still has this trace of regret and nostalgia? The actions of the criminals never stopped. Chi Ming and Xu Ruofeng worked together to solve the case, and the two got closer and closer.