Germany is on the verge of losing World War II, and a group of powerful Nazis and sympathizers from various countries crowd aboard a German submarine departing Oslo for a perilous journey toward South America. The tale is narrated by a French doctor, Docteur Guilbert Henri Vidal, who has been kidnapped to tend a sick woman on board. That patient is Hilde Garosi Florence Marly, and her husband, the German general Garosi Fosco Giachetti, is also on board. From the start, the doctor understands the precariousness of his position: he may be murdered once the woman recovers, so he attempts several stratagems to escape, though all of them fail as the ship presses onward under a heavy moral cloud.
As the war inches toward its end, faith aboard the vessel fractures. Passengers drift between resignation and impulse, with some trying to escape and others choosing suicide, all under the grim tension of a mission that seems increasingly futile. A fanatical Nazi clings to the voyage’s inertia even after Berlin has fallen, issuing orders that urge the submarines toward the nearest port to surrender. The atmosphere grows more volatile as the crew split widens: a mutiny erupts against the fanatic leadership, leaving a portion of the ship’s people to flee in a lifeboat while others are overwhelmed by the sea. Amid this turmoil, the doctor watches the world he knew shrink to the confines of the submarine, tracking every moment with a careful, almost clinical eye.
The mutiny reshapes the submarine’s inner life, and the doctor finds himself isolated as days turn into a prolonged vigil. He records his extraordinary ordeal, drafting an account for posterity even as the vessel drifts between hope and despair. The claustrophobic environment intensifies the moral questions at the heart of the voyage: loyalty, survival, and the cost of clinging to a cause that has lost its compass. In the end, a United States Navy ship arrives, rescuing the doctor and, with a decisive final act, sinking the submarine that has imprisoned him and many others. The rescue marks a grim conclusion to a harrowing odyssey and leaves the doctor to contend with the memories of what happened long after the seas calm.
In this tense, morally charged runtime, the human cost of a collapsing war effort is laid bare: the fall of a regime’s certainty, the fragility of allegiance, and the desperate will to live when all seems lost. The narrative unfolds with a steady, restrained tempo that lets the dangers of confinement and the weight of impending defeat seep into every scene, keeping the focus on character, choice, and consequence rather than spectacle.
