Four stowaways get mixed up with gangsters while running riot on an ocean liner.

Mr. Hammer runs a bankrupt Florida hotel. He'll try anything to make money, even make love to rich Mrs. Potter. But his main scheme, selling real estate, is in danger of sabotage from zanies Chico and Harpo, who also reduce the schemes of a pair of jewel thieves to chaos. A subplot involves the star-crossed love of Polly Potter and architect Bob Adams.