Her education in a French convent school completed, plain Justine Spencer returns to New York. There she is shocked to discover that her mother Dodo is a flamboyant musical comedy actress with many male admirers. Dodo, on the other hand, is dismayed to find Justine priggish and dowdy. One of Dodo's suitors is Billy Ferris, who, in a fit of jealousy, murders her and slays himself. Out of pity, Cosmo Spotiswood, another admirer of Dodo, marries Justine, but soon tires of his platonic marriage and leaves for Europe. Upon his return, Cosmo finds Justine transformed. Under the tutelage of Dodo's maid Loti, she has bobbed her hair and donned fashionable apparel. Thus changed, Justine is surrounded by suitors. Stung by jealousy, Cosmo falls in love with his sophisticated wife.