While repairing the palace, bricklayer Lu Er (played by Zhang Tong) happened to meet the emperor who was under house arrest by the empress dowager. The emperor tattooed Lu Er's private parts and planned to send him to rescue the university scholar (played by Wang Jinsong) in the prison. Lu Er was ordered to rescue the university scholar in the prison. He pretended to rob in order to sneak into the prison, but accidentally met the casino owner Hong Zhong (played by Huang Xiaolei). The two did not know each other. Hong Zhong had a mortal enemy Xu Sandao, who was also arrested and imprisoned for offending the imperial envoy Holmes. When Lu Er sneaked into the prison and rescued the university scholar, he happened to catch up with the assassin who came to commit the crime. The two escaped from the prison in a panic, and Holmes chased closely behind. During the escape, the university scholar doubted Lu Er's identity, and the latter showed his private prescription to verify his identity. When the two were about to search for the treasure map according to the tattoo, various characters such as Holmes, Hong Zhong, Xu Sandao and others were also involved in the hunt... This film is a copycat version of "Prison Break", in which Huaer Band, Dai Jun, Liu Hua and other stars made friendly appearances.