The ship's medical officer, Dr. Schumann Oskar Werner, takes a special interest in La Condesa Simone Signoret, a Spanish countess with an opiate addiction who is being deported from Cuba to a Spanish prison in Tenerife for aiding agitators. As she boards the vessel under police escort, the 600 field workers in steerage, deported to Spain because of the low market price of Cuban sugar, cheer her passage. The Condesa confides in the doctor about the brutal poverty that haunts 5,000 laborers living in squalor, under the patronage of the man she once shared a life of luxury with. She manipulates the doctor to secure drugs, yet their growing bond rests on a shared humanitarian impulse: to treat the steerage passengers as human beings rather than cargo. Those feelings bloom into a fragile love, even as both sense the hopelessness of their situation, and the doctor quietly hides a heart condition.
Selected passengers—mostly Aryan Germans—are invited to dine each night at the captain's table, a ritual that reveals simmering tensions below deck. Some are amused, others offended, by the anti-Jewish rants of German businessman Rieber José Ferrer, who begins an affair with Lizzi Christiane Schmidtmer and expands his nationalist talk to justify his worldview. The captain is soothed by Rieber’s rhetoric, believing that no one will take the Nazi party seriously. The ship’s social order flirts with cruelty and whimsy alike: Jews and a dwarf are kept at its edges, while Baby the dog is allowed at the table—until Baby’s rescue from steerage opponents ends in tragedy when the rescuer dies rather than be saved. The Hutten family’s concern for the dog contrasts with the real danger that confronts the people who pull the ship’s social engine.
At another table, the Jewish Lowenthal Heinz Rühmann sits with the dwarf Glocken Michael Dunn, a pairing that underscores exclusion and camaraderie in equal measure. When Freytag Alf Kjellin learns his wife is Jewish, he joins this circle, and the conversation turns to history, duty, and the Nazi rise in Germany. Freytag reveals that he remains estranged from his Jewish wife due to pressure from family and his employer, and the two men debate what it means to be German in the shadow of a regime that might rewrite their loyalties.
An American artist couple, David George Segal and Jenny Elizabeth Ashley, navigate a fiercely passionate and unsettled partnership. David longs for social commitment through his art, yet feels defeated by his own lack of recognition, while Jenny resists competing with his work and questions whether lasting harmony is possible when art and love pull in opposite directions. Their private turmoil mirrors the ship’s broader conflicts, where personal ambition, artistic integrity, and romantic longing ride side by side with political convictions and disquieting ideologies.
The onboard flamenco troupe provides a sultry, vibrant counterpoint to the stern formalities above deck. Their leader commands attention, but the quartet’s dynamic includes predatory behavior and vulnerability alike, as a dancer contends with a man who tries to manipulate her, and another dancer endures the price of a moment of longing. Elsa Gila Golan appears as one of the dancers, a focal point in the troupe’s shifting power, desire, and danger.
Mary Treadwell Vivien Leigh is a divorced, fading beauty trying to recapture a spark in Paris. She treats the ship’s lieutenant with scorn at first, then finds herself entangled with Bill Tenny Lee Marvin, a former baseball player whose brashness clashes with her restrained self-image. Tenny’s bluntness and her sharp, almost cruel humor collide as he flirts with danger and provokes a candid confrontation. She even offers him the cabin number of Mrs. Treadwell, an action that leads to a drunken intrusion into a cabin, where a moment of confusion almost erupts into something more intimate before she realizes the mix-up and ejects him with a sharp rebuke.
As the voyage continues, the ship’s social experiment unravels under the weight of history and humanity. In Tenerife, the deported steerage workers disembark, and the Condesa makes a brief, poignant choice to leave with Civil Guard escort, after the doctor contemplates staying with her but recognizes how she manipulated him for relief from her own suffering. The captain dismisses his passion as foolishness, but the doctor confronts him in a moment of explosive honesty: they merely carry out orders, while she acted to counter injustice. The captain warns the doctor not to answer a call from a passenger, but the doctor ignores the warning and dies of a heart attack, his body later unloaded in Bremerhaven in a coffin attended by his estranged wife and sons.
Back on deck, as the ship’s hull returns to its ordinary routine, Glocken steps forward to break the fourth wall in a quietly cryptic farewell. He laments the audience’s distance from the ship’s moral questions with a wry shrug, saying, “What has all this to do with us?… Nothing,” before walking away. The final image lingers on a procession of passengers descending into their familiar lives, the memory of the voyage unresolved, and the question of responsibility—personal and political—still echoing long after the vessel reaches harbor.