The plain-looking che Zhixiu (Jiang Zhihuan) is a capable police officer, but his life is sloppy and smelly, the car used to go to the police is full of dirty clothes that have not been washed for hundreds of years, and the smelly socks taken off can stand upright. Mixed in the suspect pile will always be identified by the victim. One day, his boss gave him and his buddies an important task, asking them to send fake models to infiltrate the clothing world and act as bodyguards for popular model Jin Shanhao. The so-called bodyguard is actually the criminal evidence of secretly searching Jin Shanhao. The glossy model secretly engaged in drug activities and even killed the policeman who had been spying on him. Under the wrong circumstances, che Zhe Xiu was chosen as an undercover and took the opportunity to meet Gao Yingcai, a girl he liked in high school. However, in order to become a qualified model, the fat car police officer had to start the great cause of weight loss and training under the supervision of talents.