Plot synopsis: Working in Beijing, Mengzi and Yaoyao are in a relationship. One day, when Mengzi found out that Yaoyao was missing, he caused a disturbance at a hair salon where Yaoyao used to work. The boss of the salon gathered a group of gang members and hunted him down. Mengzi realized that his right hand could be a gun and decided to take vengeance and look for Yaoyao…