The underdog Wei Baobao (played by Pan Yueming) accidentally gets caught in a gangland struggle of “the underworld preying on itself” while trying to pick up a girl. Forced by circumstances, he pretends to be a drug dealer named “Mr. Xue” to save his own life. Unexpectedly, he crosses paths with Huang Daqiang and Wen Xiaotian — two men posing as undercover agents eager to crack a major case — and “A Jie” (played by Wu Yue), an informant already deep undercover within the drug cartel. This leads to a series of absurd and comical situations, while the true mastermind behind the scenes gradually begins to emerge…