On Erin Island, an idyllic fishing village off the coast of Ireland, charming but somewhat work-shy Ciaran OShea, is tasked with greeting Lisa Nolan, a straight-laced young officer who has arrived from the mainland. Not that there is much for them to do, aside from dealing with the occasional drunk, and thats usually OShea himself. But strange doings are afoot: the crew of a fishing boat disappears, whales start appearing dead on the shore, a local lobsterman catches a strange tentacled creature in his trap. Soon it becomes clear to OShea and Nolan that theres something big out there, and that its hungry. Its time to rally the villagers, arm the troops…and head to the pub.