Lash is the head coal stoker on a steam ship whose shipmates have nicknamed "Captain". Lash somehow grabs the attention of society dame passenger Cora Nevins. Nevins is actually a jewel thief who's lifted diamonds from wealthy passenger Arthur Condrax. She needs Lash to aid in sneaking the "ice" ashore at Singapore. Cocky is Lash's concertina-playing buddy and uses it to signal Lash.
Karl, a German diplomat in Paris, discovers that his fiancee, Diane, has been cheating on him. He tells her that he would rather marry a "girl of the streets" than her. Outraged, Diane decides to grant his wish, and enlists the services of a Spanish singer/dancer from a disreputable nightclub to pose as a sophisticated, convent-educated singer, and surreptitiously arranges for her to meet Karl.
Neglected by her husband, our heroine decides to make him jealous by getting the handyman to play a literary genius at a party and flirt with her.
Hollywood hopeful Peggy Pepper arrives at a major studio, from Georgia, to become a great dramatic star. Things don't go entirely according to plan.