A US submarine sets sail from Tierra Del Fuego, but a crew member's hidden container of venomous fer-de-lance snakes unleashes chaos when they escape and attack crucial personnel, causing a catastrophic accident that sends the submarine plummeting to the bottom of the Southern Ocean.
Fer-de-Lance
As a deadly snake infestation ravages a submarine, a small group of survivors must band together to concoct a daring rescue plan and make a desperate bid for escape before the vessel succumbs to the scaly invaders.
