In 2006, Nanako, a talented female writer who debuted at the age of 13, came all the way to Hong Kong to attend the best-selling book signing meeting that she was about to adapt into a film. However, on the way, she suddenly met an explosion attack planned by someone. Fortunately, the tour guides Michelle and Maggie who accompanied her overreacted and didn't let her escape. Then she received a warning letter saying that anonymous gangsters who threatened to take Violet's life would do anything to let her die in Hong Kong. After hearing the news, the police kept a close watch on the signing venue. Michelle and Maggie also revealed their identity as "three-sister detective agency" to Zichuan, determined to be bodyguards with their little sister Anita to protect her safety.

On the day of the signing ceremony, the gangsters still sneaked into the venue, suddenly attacked and held the Lichuan hostage with bombs. It turns out that this young artist is jealous of foreigners' violets because his novels are neglected, but what he and Violet Chuan never expected was that Michelle, Maggie and Anita are all "papers" that can manipulate paper. They have been looking for readers of their missing friends-Violet Chuan in Lidman, and finally found the only clue ...