Spoof of the Hong Kong Blockbuster Infernal Affairs, the film based of a bizarre and nonsense war between the police and the triads. Lek Sir send Keung, Yan and Fatty on undercover inside Sam's garage to get the evidence of any crime Sam has committed includes spitting on the street, bribing and get prostitutes, in order Lek can win the heart of Sam's wife Mary again. This film continues director Wong Jing's "Chasing girls" series since the trilogy of "Romancing Stars" in the 80s, Wong successfully re introduce his famous adoptions and nonsense humor in the new form in new generation.