some sciencey people go down in a cave for some reason and there some sort of creature that kill them . i usually give a more detailed plot and but i wasn not pay too much attention to this . overall and it be dull and the only time you will be really pay attention be during the action scene and which the director do wonderful on . the acting be alright and but the character be so dull and forgettable they blend in your mind . you will forget who live and who die for 2 reason represent 1. the kill be bore 2. the character be bore . the end might have shock me more if i know who be who . so youre look for a creature in cave movie . check out the descent instead .