Directed by

Richard Thorpe
Made by

Metro-Goldwyn-Mayer
See current US streaming, rental, and purchase options for On an Island with You (1948) via JustWatch.
Read the complete plot summary and ending explained for On an Island with You (1948). From turning points to emotional moments, uncover what really happened and why it matters.
On a sun-soaked Hawaiian tropical island, Rosalind Reynolds, Esther Williams, a swimming sensation, headlines a film with her fiancé, Ricardo Montez Ricardo Montalban. The project includes U.S. Navy Lt. Lawrence Y. Kingslee Peter Lawford, the film’s military technical adviser, who soon finds himself drawn to Rosalind. Yvonne Torro, Cyd Charisse, Rosalind’s best friend and fellow star, secretly wants Ricardo for herself. The behind-the-scenes world of filmmaking blends with the island’s lush scenery, setting the stage for romance and danger.
Three years earlier, Larry met Rosalind during a USO show at his Pacific base, and that memory resurfaces as their paths cross again on set. After sharing a kiss, Larry makes no secret of wanting to spirit Rosalind away on his aircraft. At the Royal Aloha hotel, the film crew is treated to a lively performance by real-life orchestra leader Xavier Cugat and his orchestra, adding a splash of musical glamour to the proceedings.
On the day of a key scene where Rosalind flies over the set, Larry seizes the chance to fly to the island where they first met, hoping for another kiss that would seal his claim. He returns to their aircraft with his feelings confirmed, only to discover that the natives have stolen parts and stranded them on the island.
Meanwhile, her fiancé and the search party he formed are captured by the cannibals who inhabit the tropical isle, but are saved by his rival. The entanglements grow denser as loyalties are tested against a backdrop of peril and splendor.
With events spiraling, Rosalind takes the blame for the unauthorized flight to the island in a bid to shield Kingslee from a court-martial. The truth about Yvonne’s romance emerges: she has become involved with Ricardo, creating a new layer of tension. In the end, Larry and Rosalind realize they are in love, while Yvonne’s involvement with Ricardo reshapes the circle of affections and settles into a bittersweet, hopeful note.
Follow the complete movie timeline of On an Island with You (1948) with every major event in chronological order. Great for understanding complex plots and story progression.
Film set on a Hawaiian island
Rosalind Reynolds, a swimming sensation, stars in a film set on a Hawaiian tropical island alongside her fiancé Ricardo Montez. The production uses the island’s scenery to frame romantic scenes and lighthearted interactions among the cast. The sun, sea, and social gatherings create an atmosphere thick with potential romance and underlying tension.
Larry's past meeting and growing attraction
U.S. Navy Lt. Lawrence Y. Kingslee met Rosalind three years earlier during a USO show at his Pacific base, and he quickly becomes smitten. He later kisses her on the film set and reveals a plan to spirit her away aboard his aircraft. This dangerous attraction threatens Rosalind's engagement to Ricardo and foreshadows trouble for everyone involved.
Hotel scene with Xavier Cugat
At the Royal Aloha hotel, the real-life Xavier Cugat and his orchestra entertain the cast and crew. The vibrant music provides a social high point and underscores the glamour of the production. It also spotlights the growing romantic tension among the leads.
Larry travels to the island and the spark
On the next day, Larry flies to the actual island where he first met Rosalind. He asks for a kiss, and Rosalind admits she is attracted to him, intensifying the dilemma posed by her engagement to Ricardo. The attraction between them becomes increasingly undeniable.
Parts stolen; group stranded
Returning to their aircraft, Rosalind and Larry discover that the natives have stolen essential parts, leaving them marooned on the island. The sudden setback heightens the tension between their growing feelings and the practical need to escape. The island's isolation amplifies the stakes for everyone involved.
Ricardo's search party captured; rescued by rival
Meanwhile, Ricardo's search party is captured by the island's cannibals, threatening the entire operation. They are saved by Ricardo's rival, whose intervention disrupts loyalties and adds another twist to the drama. The rescue reshapes relationships among the central characters.
Everyone leaves the island; complications begin
After the main group leaves the island, complications begin to surface back home as emotions and loyalties collide. Rosalind and Larry must navigate their feelings amid the fallout of the island ordeal, while Ricardo's position remains unstable. The cast's personal lives become as fraught as the production schedule.
Rosalind takes the blame to save Larry
Facing a court-martial for the unauthorized flight to the island, Rosalind steps forward to take the blame. Her sacrifice buys Larry time and keeps their relationship intact, even as she bears the consequences. The moment marks a turning point in their dynamic and illustrates her loyalty.
Yvonne's romance with Ricardo revealed
The circle learns that Yvonne Torro has become romantically involved with Ricardo, Rosalind's fiancé. The revelation intensifies the love triangle and tests everyone's loyalties. Tension mounts as the relationships shift under pressure from the island's events.
Larry and Rosalind acknowledge their love
In the wake of the revelations, Larry and Rosalind finally acknowledge that they are in love. The admission reframes their futures and gives them a path forward despite the surrounding complications. The couple's bond becomes the emotional core of the story's end.
Behind-the-scenes tensions and motives hinted
Yvonne's secret motives and the rivalries among the cast surface behind the scenes, adding texture to the public image of the star-studded production. These undercurrents remind the audience that appearances can mask complicated personal agendas. The film uses these dynamics to enrich the narrative.
Production continues with new romantic realities
With the major romantic upheavals resolved or acknowledged, the production moves forward, balancing professional duties with the personal revelations that have reshaped the cast. Rosalind and Larry's romance stands as a new anchor, even as Yvonne and Ricardo's relationship remains entangled. The ending leaves room for future developments both on and off screen.
Explore all characters from On an Island with You (1948). Get detailed profiles with their roles, arcs, and key relationships explained.
Rosalind Rennolds — Esther Williams
Rosalind is a celebrated swimmer and film star whose romance and career collide on a tropical island. Her charm drives the plot as she navigates love, fame, and professional responsibilities.
Lt. Lawrence Y. Kingslee — Peter Lawford
A U.S. Navy technical adviser who falls for Rosalind and endangers his career with an unauthorized island flight. He brings a mix of bravado and earnestness to the romance.
Ricardo Montez — Ricardo Montalban
Rosalind's fiancé, whose relationship with Rosalind and involvement with Yvonne adds tension to the love triangle. He represents stable romance amid ensemble chaos.
Yvonne Torro — Cyd Charisse
Rosalind's best friend and fellow star who secretly desires Ricardo. Her actions fuel the romantic complications and mirror the competitive nature of Hollywood friendships.
Buckley — Jimmy Durante
A boisterous presence providing comic relief on the island-set production, adding warmth and chaos to the film's lighthearted moments.
Penelope Peabody — Kathryn Beaumont
A fellow star and Rosalind's co-star, whose presence adds to the ensemble dynamics and romantic entanglements of the production.
Commander Harrison — Leon Ames
A military figure connected to the film's technical advisement, representing authority and potential conflict within the island romance and production.
Xavier Cugat — Xavier Cugat
The real-life orchestra leader entertaining the cast, symbolizing the musical glamour surrounding the tropical production.
George Blaine — Dick Simmons
A cast member within the production’s ensemble, contributing to the island's theatrical atmosphere and plot developments.
Chester Clute
Supporting cast member adding to the ensemble dynamic of the island-set film.
Learn where and when On an Island with You (1948) takes place. Explore the film’s settings, era, and how they shape the narrative.
Time period
Early 1950s
The story unfolds in the early 1950s, a period marked by Hollywood's tropical-location productions and glamorous musical numbers. A U.S. Navy liaison and a UsO-style show context frame the romance against a backdrop of studio life and on-location adventures. The era's fashion, music, and film industry dynamics shape the characters' choices and the plot's tone.
Location
Hawaii, Royal Aloha Hotel, Pacific island
Set on a Hawaiian island, the location doubles as a film set and a tropical getaway for the cast. The Royal Aloha hotel hosts the production, while the island’s landscape provides scenic beauty and the stage for romantic complications. The island is inhabited by natives whose actions drive key plot moments, including the disappearing parts that strand the crew.
Discover the main themes in On an Island with You (1948). Analyze the deeper meanings, emotional layers, and social commentary behind the film.
💖
Romance vs Duty
Rosalind's growing love for Larry clashes with her engagement to Ricardo and her obligations on a film set. Larry's unauthorized flight to the island threatens his career and forces a reckoning with professional duty. The relationship tests social expectations and the characters' commitment to fame versus personal happiness.
🎬
Film World vs Real World
The narrative blends the glitz of a movie production with real-life romance and danger on the island. Performances, music, and studio concerns intrude on intimate relationships, while the line between fiction and reality adds humor and tension. The island's adventures remind viewers that life off-screen can be just as dramatic as any scene.
🌺
Exoticism & Jealousy
The tropical setting provides an exotic backdrop that fuels jealousy and romantic intrigue among the stars. Yvonne's hidden longing for Ricardo complicates Rosalind and Larry's budding romance. The paradise image contrasts with the characters' messy, real-life emotions, driving the film's dramatic turn.

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On a sun-soaked Hawaiian tropical island, the glamour of Hollywood meets the precision of the military in a vibrant musical spectacle. The production is a dazzling display of aquatic stunts and choreography, headlined by swimming sensation Rosalind Reynolds. With her fiancé, Ricardo Montez, starring alongside her, the film promises to be a showcase of romance and talent, all supervised by the watchful eye of the U.S. Navy. The atmosphere is a unique blend of cinematic make-believe and military formality, setting the stage for a story where off-screen emotions threaten to eclipse the scripted drama.
Into this mix steps Lt. Lawrence Kingslee, a technical adviser hired to lend authenticity to the naval sequences. Kingslee brings more than just professional expertise to the set; he carries a vivid memory of a past encounter with Rosalind during a USO show. Convinced that their brief performance together sparked a lasting connection, he arrives with the expectation that she will welcome his romantic advances. His certainty is swiftly challenged by the reality of Rosalind’s current relationship, creating an immediate friction that simmers beneath the tropical heat.
The dynamics grow more intricate as the film crew settles into the lush surroundings. While Larry navigates his role as a cautious observer while pursuing his heart’s desire, the glamorous facade of the production begins to show cracks. Yvonne Torro, Rosalind’s best friend and fellow star, watches the unfolding drama with her own interests at heart, specifically regarding Ricardo. This creates a tangled circle of affection where loyalties are questioned and friendships are tested against the allure of unrequited love.
As the cameras roll and the orchestra plays, the idyllic setting becomes a backdrop for simmering tensions. Larry’s determination to win Rosalind’s affection drives a wedge into the production’s harmony, forcing everyone to reevaluate their positions in this romantic quartet. With professional duties clashing with personal yearning, the line between the reel world and the real world blurs, hinting that the most captivating drama may be happening far from the director’s cut.
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