The plot follows Paul Marsh (Ezra Godden) and his girlfriend Barbara (Raquel Meroño) as they sail off the coast of Spain. After a storm wrecks their boat, they take refuge in a creepy, isolated fishing village called Imboca. Paul quickly realizes that the villagers worship an ancient sea god called Dagon and have become transformed into grotesque, fish-like creatures. The town’s dark history is revealed as Paul uncovers secrets about his own connection to Dagon and the terrifying rituals the villagers engage in to appease their god.

Dagon is notable for its eerie atmosphere, practical effects, and unsettling imagery, as well as Gordon’s ability to capture Lovecraft’s trademark sense of dread and otherworldliness. The movie blends body horror with a creeping sense of inevitability, as the protagonist faces both physical and psychological horrors.