Joan Grey is a young pianist that falls for the good manners and nice clothes of a gang of mobsters. She is warned by Mark Hampton, an investigator, that she is associating with gangsters and she is heading for trouble. She refuses to believe him and becomes innocently involved in some robberies and killings.

A greedy businessman tries to block the building of a new railroad in his area.

In 1803, the only thing standing between Napoleon and his plan of world domination is England and the British Navy. The admiralty, learning that Napoleon has assembled an invasion fleet decides to send out one of its vessels to destroy it the French flagship under cover of fog. Forced out of retirement, ruthless, tyrannical and temperamental Captain William Blake is put in command. He wields his command with sadistic fury until an epidemic of scurvy attacks the crew and, when he refuses to go ashore for needed provision, mutiny and insubordination results...and, then, the French flagship arrives.