The idea behind this film is sound and interesting. Mother Nature gets as mad as hell, and declines to take it any more when a couple gets all in her face.
A squabbling couple go for a weekend's camping by the sea. The man is an arrogant lout with no respect for the environment he's supposed to enjoy, while the woman is a sour-faced, snapping cow. Soon strange things start to happen as their surroundings turn against them.
The inventiveness of the screenwriter, in bringing their peril to them, bit by by, is quite effective, with some genuinely shocking and tension-filled moments, but lordy, why on earth did he make the two leads so godawful?
Their hatefulness steams off them like vapour off dung. Their company is so vile - she's so unremittingly sour and he's so boorish and hard-headed - that the scares come as actual relief. It's not so much wanting them to be menaced because they're so awful, just that their being menaced gives us a break from their vicious swipes at each other.
An uncomfortable portait of a marriage and an effective enough supernature-al (see what I did there?) thriller, of which the thriller bit could have been tighter. Worth a look, but doesn't quite live up to its potential.