Happily married American executive Mike Harper is transferred to London with demure wife Janet. However, the change in climate seems to have an unexpected effect on them, and while she is soon flirting with a French antiques dealer, her husband reacts by focusing his attentions on a pretty secretary. Romantic comedy, with Doris Day, Rod Taylor, Sergio Fantoni, Reginald Gardiner and Hermione Baddeley.

When American couple Janet and Mike move to England for his business, she soon fears he's having an affair with his attractive secretary and decides to get back at him by pretending she has been unfaithful.