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A U.S. Navy submarine, the USS Delphinus, is on a six-month deployment where the all-male crew battles isolation and psychological strain. After a brief shore leave in Naples marked by intense connections and reckless behavior, strange occurrences and growing madness plague the ship. The men are haunted by a mysterious female entity who seems to be leading them into a deadly trap. As the line between reality and hallucination blurs, the crew descends into chaos, and the captain struggles to maintain control. The Delphinus becomes a vessel of guilt, trauma, and supernatural suspense in the depths of the Mediterranean. Comparable works include Das Boot