A boatswain finds himself stranded on an island. Though surrounded by starving, and poor islanders, the boatswain soon learns that the misery is not caused by the people themselves, but rather by a pack of blood-thirsty pirates.
The Leopard is a "western" type film where the "cowboys" are replaced by huasos who defend themselves against the misdeeds of a bandit who assaults the region with his excesses.