Polly Shang Kwan and Sam Hui are con artists who befriend a family of street venders and entertainers. The group constantly faces financial problems as they are ripped off by thugs, their rent is raised and car breaks down. Polly Kuan (who portrays a man for the entire film) lies, cheats, and steals to come up with the cash that everyone needs. Things get more serious when triad thugs kidnap the daughter of the family, and sell her to a triad boss, killing Carter Wong in the process.
The group devises a plan - they decide to dress up Polly Kuan as a girl and sell her and lovely Angela Mao to the gangsters in order to infiltrate the organization and free their friend. A furious kung fu frenzy goes down with Ms. Kwan and Ms. Mao beating up the gangsters. The film ends with Polly proclaiming that she really is a girl, much to the astonishment of the entire cast.