Captain Horatio Hornblower leads his ship HMS Lydia on a perilous transatlantic voyage, during which his faithful crew battle both a Spanish warship and a ragged band of Central American rebels.
Small-time jewel thief Leo Martin is deserted by his partners-in-crime, club owner Gus Loman and driver Hatchett, when the robbery they are committing goes wrong. After serving his prison sentence, Leo emerges with an intricate plan for revenge. Leo implicates Loman, as well as his amoral boss, Gregory Lang, for murder -- but Inspector Rogers suspects Leo.