Yin Zhixu (che Shengyuan) has this deeply sad experience of his first love, and his same-sex lover dies unfortunately, leaving Yin Zhixu to live in regrets and memories. Before dying, the lover entrusted his sister Rose (Li Xuan) to Yin Zhixu. With the passage of time, Rose gradually fell in love with the mature and reliable Yin Zhixu, but for the latter, Rose is more of a concern for the deceased lover and a heavy responsibility. Yin Zhixu, as a policeman, was conscientious and conscientious in his duties, which naturally aroused the hatred of gangsters and became the primary figure they wanted to get rid of. At the same time, Yin Zhixu found that he was actually a complete woman inside, and planned to have sex reassignment surgery to find himself. At this juncture, the news of the death of his partner Zhenyu (Gao Gengpao) came, and the rose was also kidnapped by a traitor. Yin Zhixu resolutely set out into the tiger's den to save the rose.