During the Northern Song Dynasty, there were a large number of chivalrous heroes, which led to many legends. It is said that the royal cat exhibition Zhao (Zheng Shaoqiu) and the hairy mouse Bai Yutang (Fu Sheng) are the children of the rich family, and the same clan (Liu Jiarong). Zhan Zhao is calm and sophisticated, and Bai Yutang is competitive, but the two brothers do not give way to each other. In order to show their skills, they start a series of competitions with the help of the master, which finally annoys the master and drives them out of the door, and they have been in trouble ever since. Bai Yutang accidentally had the opportunity to help today's saint (Liu Jiahui is acted the role of), unfortunately missed face to face, on the contrary, Zhan Zhao was then appreciated by the emperor, and then entered the palace as an official and was honored as a "royal cat". Hearing this, Bai Yutang was so dissatisfied that he sneaked into the palace to steal the seal and staged an everlasting show of five rats messing with Tokyo. This film is based on the vernacular novel "Seven chivalry and five meanings".