Under the full moon, a pirate crew of werewolves and vampires gives chase on a cannibal isle. When their ship is mercilessly sunk by pirates, British marine Jan and Dominican priest Timoteo are brought before the captain of the Trivia. Under its strange red sails, they hear the terrible tale of Captain Vigoreaux, a vampire captain with a crew of werewolves. With the full moon rising, the men are put ashore on a remote cannibal island and turned loose—to be hunted for sport. But with the aid of Sampari, a native girl with a passionate desire to put an end to her tribe's oppression, the three of them just might find a way.