Near the
Yucatan Peninsula, Captain Ramsey's freighter finds the ship "Hades" drifting in the ocean, showing no apparent sign of life on board. Ramsey and his crew explore the Hades, while they are being observed by an unseen entity. In the cargo hold, they discover an ancient Aztec treasure, which gives second mate Medina flashbacks to a violent ritual. They also learn from the diary of the Hades' captain, Jameson, that the artefacts were retrieved from
Montezuma's temple. Two of Ramsey's men, Delgado and Lane, attempt to plunder some of the treasure, but Delgado becomes possessed as a result. He transforms into a reptilian monster, mauls Lane to death, and sets about killing the rest of the crew. In the kitchen, Medina discovers Jameson, traumatized but alive. The Hades' captain hints that he, too, fell under the treasure's evil influence and, while possessed, turned against his crew mates. To escape his predicament, he flees and commits suicide. Eventually, human presence on the Hades is whittled down to just Johnson and first mate Bergren. They rig the cursed ship with explosives. The monster kills Bergren, and Johnson jumps overboard just as the Hades is blown apart. She's rescued by the freighter, but is revealed to be possessed herself. ==Cast==