Paul Marsh, a young man, discovers that the truth will condemn him to a waking nightmare of unrelenting horror after a boating accident off the coast of Spain. As night falls, people disappear and monstrous creatures appear, pursued by the entire town of Imboca, where they pray to Dagon, a sea god.
Dagon
In a Spanish fishing town, a young couple's boating accident strands them on the beach, where they uncover a dark secret: the town is under the malevolent influence of an ancient sea god and its terrifying half-human offspring.