Mack did not sign up for hunting unknown ghost-eating creatures. But that's what he gets when he and Brandon arrive to help Eli and husbands at an old inn situated in the Scottish Highlands. Now he's surrounded by terrified ghosts on the run, zombie-ghosts that look eaten, and no one knows what the baddie is. They're running out of time to figure it out though, because whatever it is? It's herding ghosts straight for the inn. Scarier...