The chatterbox Du Yufei (Wang Qianyuan), the semi-retired Uncle Neng (Liu Hua), the eager-to-get-married Hua Jie (Yuan Shanshan), and the newcomer Chen Li (Zhou You) form an unreliable anti-drug police team. In order to monitor drug dealers more covertly, they bought the lobster restaurant next door. Unexpectedly, the business became booming. While running the lobster restaurant and searching for clues, they made a series of ridiculous jokes. And around this lobster restaurant, there is a bigger conspiracy hidden...