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Famed concert pianist Johann Aradi (Lewis Stone) has earned a "Don Juan" reputation because of his love-'em-and-leave-'em attitude with the ladies. While performing in Rome, he meets a likely conquest in the form of the beautiful Nanette (Shirley Mason), who idolizes the pianist. But when he discovers that the girl is only 16, he sets about to disillusion her by throwing a drunken party and inviting all of his former lovers. He then arranges for Nanette's sweetheart Roberto (Malcolm McGregor) to "rescue" the girl from this den of iniquity. His good deed done, Johann goes back to his old lothario ways -- until, at long last, he falls in love for real.