Nan Yu was originally the protagonist of the Mary Sue game. When he woke up, he found that he was in the Republic of China and shared his body with Gao Han, the male protagonist of the detective game. One studies love all day long, and the other studies murder cases all day long. Two enemies are forced to work together to solve a strange case. The two compete with each other but must cooperate. Let's see the resentful CP solve the murderous case of the Republic of China.