Jack Walsh [Kurt Russell] enlists as a U.S. Naval Seaman shortly after the Japanese attack at Pearl Harbor, marking the opening act of the United States' involvement in World War II. His wife Kay [Goldie Hawn] signs up to work in an armaments factory in California while he serves overseas, and the distance begins to weigh on both of them as the war intensifies.
Caught in the quiet loneliness of wartime, Kay becomes steadily more aware of her own isolation. She eventually befriends her neighbor Hazel, a club singer whose own warmth and companionship offer a rare solace. Meanwhile, Lucky, a factory worker and musician, makes regular passes at Kay, testing the boundaries of her resolve. After months of avoidance and hesitation, Kay agrees to go out with him on a date, but the evening ends with a painful revelation: when the moment comes, she confesses she is married, and she goes home alone, leaving Lucky to ponder what might have been.
The factory throws a weekend party to celebrate its ongoing success, and Kay and Hazel push each other to attend. At the jamboree, Kay finally sees Lucky perform on the trumpet, and the magic of the moment gives her permission to let down her guard. She agrees to return with him to his world, allowing a new, complicated tenderness to bloom between them. The trio—Kay, Hazel, and Lucky—enjoy their time together until Kay’s husband returns unannounced on a 48-hour leave during the summer of 1944. When Jack unexpectedly finds them at Hazel’s, he takes Kay back to their own home.
In a tense, matter-of-fact moment, Jack searches through Kay’s closet for his clothing and, catching a glimpse of the Leadman work shirt, assumes it belongs to another man. Kay explains that she has been promoted at the factory, a realization that underscores the strain and complexity of their relationship. Over dinner the truth lands hard, and the next morning Jack returns to his ship, leaving Kay to face the consequences of the days they shared apart.
Back at the factory, the night doesn’t end with quiet reconciliation. Lucky invites Hazel to the club after work, and the two of them sleep together. Kay arrives by taxi later but, upon seeing Hazel, she retreats and goes home, the book of their entangled lives growing heavier with each turn. The friendship between Kay and Hazel appears to reach a tentative peace, yet the trio still ventures out together again, with a very drunk Kay and Hazel trading insults while Lucky carries Kay home.
In the dawn that follows, Lucky announces he will be going on tour with a band, a step that cements the end of the complicated triangle in the factory town. When the war finally ends with Japan’s surrender and the servicemen begin to return home, the plane factories begin laying off workers, and the emotional climate shifts with the season. Kay sends Lucky a farewell letter, signaling a life beyond the temporary closeness of the wartime arrangement. Back with Kay, Jack returns to her side, and Hazel to her own life, eventually marrying the club owner and closing the chapter on a turbulent, transformative moment in their lives.
