Gloria DeHaven and June Allyson play sisters Jean and Patsy Deyo, nightclub performers who transform their apartment into an after-hours USO (being 1944, it's all perfectly innocent). Van Johnson is sailor John Dyckman Brown III, a millionaire who keeps his background a secret. Both women
have the hots for him, but he seems more interested in the flirtatious Jean than in her more demure sister, who has fallen harder for the swabbie. No sooner do the girls mention that a nearby empty factory would make a great USO than John buys it, secretly of course, and turns it into just that.
Believing it is her sister that John loves, Patsy tries to stay out of the way; howeve...