When Joy Duval and her sister, Cicily, lose their inheritance and are faced with the necessity of working, Joy applies at an employment agency disguised as a prim old-fashioned working girl and is hired by Aunt Harriet as a companion. She is primarily concerned with the reform of Billy Norton, Harriet's nephew. The young couple are discovered in the garage of a wealthy relative, where they spend the night unaware of each other's presence; and it is assumed that they have eloped. Harriet is delighted when they are married, and Billy is happy to find that his wife is actually a chic beauty. Through a misunderstanding, his wife is mistaken for Angel Face Ann, a notorious thief, but all ends well when the real lady crook is captured.