Nan Yu was originally the protagonist of the game with the Mary Sue plot, but she woke up to find she was in the Republic of China and shared the body with the detective game master Gao Han. Despite their competition, they were forced to work together to solve strange cases.
A rookie Shanghai police captain disguises himself as a student to investigate a murder at a local high school. However, he hates studying, Therefore he must juggle homework and solving the crime case.