The story takes place in ancient times, in the Jianghu world. Gongsun Lingyue is a big thief who kills without blinking an eye. He is very powerful. Murong Lunle and Murong Lunshen were born in the sixth family, nobles, and were raised by pampered parents. However, they learned martial arts freely, so they have high martial arts skills. Strong and upright, their parents decided to let them train. After all, catching bad guys is the responsibility of Lumenmen. They decided to kick the two brothers out and work as cadres in a small county government where Lumen thought Gongsun Lingyue would commit a crime next time.