Berta Ruck

Without explanation, William "Still" Waters, the head of a London business, asks stenographer Monica Trant to be his "official fiancée" for 500 pounds. Monica agrees in order to help support her brother. Monica is introduced to Waters' family at his home. She charms his mother and other relatives, and even wins over the reserved Waters, but she soon resents the business nature of their proposition and returns to London. Waters then explains the reason for the strange request.

Business manager Ludvig Berndtson desperately needs a fiancée to get rid of an ex-girlfriend. He asks one of his employees, secretary Monica Brandt, to pretend to be his fiancée for a while. She is at first unwilling but desperately needs the money and accepts.