Build a movie plot around this: What does Paul pours over his own body and sets himself on fire? Kerosene
The film opens with a dream sequence in which stock market tycoon Paul Marsh discovers a mermaid with razor sharp teeth while scuba diving into a carven pit. Paul awakes on a boat off the shores of Spain, where he is vacationing with his girlfriend, Barbara, and their friends Vicki and Howard. A sudden storm blows their boat against some hidden rocks. Vicki is trapped below deck, and Howard stays with her while Paul and Barbara take a lifeboat to the nearby fishing village of Imboca. During their absence, an unseen creature from the deep attacks the two in the boat.At shore, Barbara and Paul find no one about, and venture into town until they eventually reach the church, where they find a priest. Barbara convinces him to help them, and the priest speaks with two fishermen at the docks, who volunteer to take either Paul or Barbara to the wreck. Despite Paul's misgivings, Barbara stays to try to find a phone in order to call a doctor while Paul goes to help their friends.Vicki and Howard are mysteriously missing, however, and Paul is taken back to Imboca, where he is sent to the hotel that Barbara was supposed to have gone to. But she is missing as well, and Paul is left to wait for her in an old, filthy hotel room, where he dreams of the mermaid again. His fitful rest is disturbed by a large gathering of strange, fish-like people approaching the hotel and is forced to flee. He ends up in a macabre tannery full of human skins, where he discovers Howard's remains. He escapes the tannery by starting a fire, and finds momentary safety with an old drunkard named Ezequiel, the last human in Imboca.Ezequiel explains to Paul about how the village in lean times has fallen to the worship of Dagon. This brought incredible wealth to Imboca in the form of fish and gold, but also horror when Dagon demanded live sacrifices and human women (including Ezequiel's parents) to breed with. Paul begs Ezequiel to help him escape. Ezequiel relents and takes Paul to the Mayor's manor, so he can steal the town's only car. Ezequiel...