The ace undercover Chu Han, in order to complete the undercover mission, pretended to be a gangster and had a good time in the club a month in advance, and was subsequently arrested and put in jail. His unruly and ruthless character quickly gained the trust of the gangster Zhang Dahai. However, after he got out of trouble, he flirted with his wife Sister Hua. However, all of this was just Chu Han's plan to bring Zhang Dahai to justice.
