When the marriage of Justus and Dorothy Druce fails, their daughter Dorothy goes with her mother to the Catskills, while her twin sister Justine settles in New York with Justus. Years later, Justine becomes engaged to Charlton Sloane, who offers to help Justus out of his financial difficulties by pawning the Druce family jewels. Justus' niece Adelaide, bitterly disappointed in her love for Charlton, convinces her uncle that the young man stole the jewels, prompting Justine to seek the services of Warde MacMahon, a young lawyer vacationing in the Catskills. When Warde's car overturns, Dorothy tends to his injuries in her childhood hideaway, "The Inn of the Blue Moon," and the two fall in love. Dorothy and Justine finally meet, and following several adventures involving their identities, Charlton's name is cleared, the daughters are married to their prospective suitors, and the long separated parents are reunited.