Horror about a team of scientists who stumble upon the ruins of a 13th century abbey deep in the Romanian forest. On further inspection, they make a startling discovery: the abbey is built over the entrance to a giant underground cave system. The scientists hire a group of American cave-explorers to help them investigate its depths. Jack (Cole Hauser) & his brother Tyler (Eddie Cibrian) are thrill-seeking professional cave explorers who run a team of the top divers in the world. They arrive in Romania with all the latest equipment, including a new type of scuba tank allowing a diver to remain submerged for up to 24 hours. The crack unit, which also
Includes:: Charlie (Piper Perabo) & Buchanan (Morris Chestnut), immediately begins their exploration. But what they find deep inside the cave is not just a new eco-system, but an entirely new species altogether with a bloodthirsty aim never to allow the team ever to return to the surface.