There are four great courtesans in Da Tong Prefecture who are pretty as well as talented. Yi Pin and Liu Song go to Ling Yin Pavilion to look for them, but An An and Ruo Xin find out about that and beat the two of them up. Tong Zhou Association's Ma Ye Lu wants to send an assassin, Hai Tang, to join the top courtesan competition as part of his plan to assassinate the emperor. Yi Pin and Liu Song collect a debt from a customer in order to sneak into Ling Yin Pavilion. They take the customer home and unexpectedly get their hands on the secret martial arts books. Both An An and Ruo Xin show what they are good at so that they will be selected as courtesans. Liu Song and Yi Pin join Ling Yin Pavilion as guards. And their task happens to be protecting the courtesans. (Source: Viu)