The musical comedy is the tale of two sisters, Cheryl (Jane Powell) and Josephine (Constance Moore). Cheryl is a 15-year-old music student with aspirations to make it big on the stage just like her older sister Josephine. Unbeknownst to her, Josephine is not a Broadway singing star but a burlesque performer. Encouraged by tales of her sister's success by a visiting Broadway producer, Cheryl pays a surprise visit to Josephine in New York and discovers the truth.