Frank Walsh, an expert big game trapper, has just boarded a shipping freighter with a fresh haul of exotic animals from the Amazon, including a rare jaguar. But the big cat isn't the deadliest creature on board - Richard Loffler, a political assassin being extradited to the U.S in secret, is also along for the ride. But when Loffler escapes and releases the captive animals, the ship is thrown into chaos and Frank finds himself in a battle to save the crew, not only from the dangerous beasts aboard, but also the madman on the loose.