A team of divers/extreme sport fanatics become trapped in a complex system of underwater caves in New Guinea.
I wish the story was more developed than that but it isn't. There's no monster , it's only a story about survival. Sure there's a lot of dramatic scenes but i didn't care less about any of the crew except maybe Frank. Actually i didn't care about Frank either but he made the hard decision and tried to keep the team together which I could relate to. The only reason I somehow enjoy this move was the cinematography which was pretty amazing (especially the underwater scenes ) and the acting was also solid.
PS. Don't be fooled by James Cameron's name on the poster , he's like only 1 producer out of 9 ( and 1 executive producer out of 5 )