Department store owner J. Elliott Dinwiddy has waited ten years for the perfect astrological moment to propose to his secretary, Myrtle Tweep. His astrological advisor, Dr. Wakefield, has told him that if he can unite a boy and a girl in true love before midnight, he can propose to Myrtle the following night at 3:15 a.m. and she will accept. Fate brings unemployed dancer Caroline Wilson into the music department of Dinwiddy's, where she meets handsome songwriter Terry Keith. Keith has been writing music for Dinwiddy's Silver Jubilee show and has allowed Dinwiddy's nephew, Truelove Spencer, to take all the credit. That night, Terry comes into Dinwiddy's to work on the music and finds Caroline asleep in the Honeymoon Cottage, the section of the department store Spencer supervises. Posing as a man named "Pinky," Dinwiddy promises Caroline that Spencer will hire her as the bride of the Honeymoon Cottage and invites her to live there.