Song writer Duke Wilson and his showgirl sweetheart Lois Rogers have to keep breaking their engagement because Duke keeps losing his money playing poker...and Lois finally declares finis to the whole process. Duke and his pal, Cliff Dugan, write a new musical comedy and get wealthy playboy Bob Madison to back it, but Madison and Lois are now a romantic item , and his backing-plans includes her as the show's leading lady. Duke and Cliff and Madison are drafted, and Ruth goes along to the camp as an official hostess. Then rookie-newly-arrived Buck Private Duke takes over the U.S. Army and proposes his show be produced at the camp, with Lois as the leading lady. Then Lois finds out that Duke is not doing this just to entertain his fellow rookies, but in order to "test" the show for professional production. Lois declares this to be a selfish move on his part.