French pirate Jean Lafitte rescues a girl and joins the War of 1812.

Playboy Andy Mason, on leave from the army, romances showgirl Eadie Allen overnight to such effect that she's starry-eyed when he leaves next morning for active duty in the Pacific. Only trouble is, he gave her the assumed name of Casey. Andy's eventual return with a medal is celebrated by his rich father with a benefit show featuring Eadie's show troupe, at which she's sure to learn his true identity...and meet Vivian, his 'family-arrangement' fiancée. Mostly song and dance.

With the end of the North American Civil War, the manufacturers of repeating rifles find a profitable means of making money selling the weapons to the North American Indians, using the front man John Lattimer to sell the rifles to the Cheyenne. While traveling in a stagecoach with Calamity Jane and William "Buffalo Bill" Cody and his young wife Louisa Cody that want to settle down in Hays City managing a hotel, Wild Bill Hickok finds the guide Breezy wounded by arrows and telling that the Indians are attacking a fort using repeating rifles. Hickok meets Gen. George A. Custer that assigns Buffalo Bill to guide a troop with ammunition to help the fort. Meanwhile the Cheyenne kidnap Calamity Jane, forcing Hickok to expose himself to rescue her.

A Swedish princess boards an ocean liner in Europe en route to an acting career in America and finds herself getting inconveniently attached to a bandleader returning home. To complicate matters, a blackmailer on board apparently knows she is not who she claims to be - and he has his sights set on other passengers with secrets of their own. In the meantime an escaped killer has stowed away under someone else's identity, and is killing again to cover his tracks; five international police detectives on board are heading the investigation to find him. When evidence points to the princess and bandleader, they must find the killer themselves - before he finds them.