Chen Sanyuan (played by Teng Limin) has been influenced by her uncle Xiaosheng (played by Ouyang Zhenhua) since she was a child. After graduating from university, she became a police officer and a female police officer with an armed rifle. Her performance has reached the "Anti-pornography Group", but her boss Cheng Feng (played by Wei Junjie) has always been sexist towards her. She is competitive and has been striving for good performance. During this period, she met Zhu Su'e (played by Guan Yonghe), who works as a civilian, known as Sister E. Sister E originally had a happy family, but later divorced and had to become a female police officer with an armed rifle. Then Sister E also met Xiaosheng, and they became a pair of vindictive enemies, and later they became lovers. After a period of getting along, Sanyuan and Cheng Feng got to know each other a lot and became good friends. What Sanyuan didn't expect was that he actually fell in love with Cheng Feng...