Situ Yaozu (Zheng Kai), an ordinary young man in the Northern Song Dynasty, learned martial arts in a famous and upright sect. After entering society, he discovered the cruelty of reality. He gave up his hopeless job as a constable and went to the capital Bianliang to find the value of life. In Bianliang, Situ Yaozu met Wang Erya (Pan Zhilin), a singer who could not become popular, and got to know Zhang Dingding (Sun Jian), a second-generation official who liked painting. Because Zhang Dingding's father did not want his son to become a son-in-law with a high risk factor, Situ Yaozu accidentally became Zhang's father's adopted son, replaced Zhang Dingding in the competition for the son-in-law, and competed with Zhang Dingding's friend Wang Cui (Yu Silu). The winner Yaozu was qualified to be a son-in-law, but the princess had been abducted by a foreign country. In order to become a son-in-law, Situ Yaozu, Zhang Dingding, Wang Erya and Wang Cui embarked on a thrilling and funny journey to rescue the princess, and they also experienced their own growth...