Four friends arrange a ghostly excursion, their guide asks them each to tell the scariest story they have ever heard, but little do they know, those stories would have major consequences for them and others.

Ritchie is a Glaswegian chancer with low hopes and no prospects. Disillusioned with city life, he goes undercover at a Highland conservation centre to make his fortune as an illegal pearl fisher with the help of his two hapless and...