After a group of biologists discovers a huge network of unexplored caves in Romania and, believing it to be an undisturbed eco-system that has produced a new species, they hire the best American team of underwater cave explorers in the world. While exploring deeper into the underwater caves, a rockslide blocks their exit, and they soon discover a larger carnivorous creature has added them to its food chain.

Genres

Cast

Cole Hauser

Jack McAllister

Lena Headey

Dr. Kathryn Jennings

Morris Chestnut

Top Buchanan

Eddie Cibrian

Tyler McAllister

Piper Perabo

Charlie

Daniel Dae Kim

Alex Kim

Kieran Darcy-Smith

Strode

Rick Ravanello

Briggs

Marcel Iureș

Dr. Nicolai

Vlad Rădescu

Dr. Bacovia

Simon Kunz

Mike - Caver

David Kennedy

Ian - Caver