A high-society matron representing a private charity comes aboard the Fortuna to hack apart the roulette wheel, and Andamo falls in love with her.

After Lucky converts the Fortuna to an exclusive club to avoid the police's attempts to shut down the ship as a casino, he deals with a young woman who is being blackmailed by an unknown criminal.

When a gangster abducts Fortuna comedian Jerry Musco's wife to force Jerry to come back to his club, Lucky and Andamo set out to recover Jerry's wife and Maggie, who got picked up as well.