Police officer Lin Wengang (played by Liu Zhaoming) has two right-hand men, Wei Zhihao (played by Wu Zhenyu) and Cheng Jun (played by Huang Qiusheng), although these two have very different personalities and very different styles of doing things, but they get along tacitly, like two puzzle pieces seamlessly. Wei Zhihao and Cheng Jun both fell in love with Lin Wengang's daughter Lin Jing (played by Li Meixian), but Cheng Jun realized that his conditions had entered Wei Zhihao, so he chose to quit this love triangle.　　After that, Cheng Jun met a psychiatrist named Fang Baoer (played by Lin Qixin), and although the two had a short relationship for a while, Fang Baoer soon found that Cheng Jun still couldn't forget Lin Jing in his heart. Cheng Jun's cousin Li Xiaomei (played by Yao Zhengjing) also loves her cousin obsessively, but she was also calmly rejected by Cheng Jun.