Based on a short story by H.P. Lovecraft, the undisputed master of macabre, DAGON follows Paul and his girlfriend, Barbara, as they celebrate the success of their new company on a yacht off the coast of Spain. When a sudden storm smashes their boat on a reef, Barbara and Paul swim to the nearest town for help. The decrepit fishing village of Imboca at first seems to be deserted, but unblinking eyes peer out from boarded-up houses. The strange inhabitants offer little help to the stranded couple. By nightfall, Barbara is missing and Paul finds himself pursued by the entire town...but a town of what?