Elisabeth Doubleday is a very successful estate agent with offices in London and Paris. But she leads a double life.

Monday to Wednesday the English half, called Libby, lives in London with Roger Rodgers, a perfect English gentleman. Thursday to Sunday she is Lisette, and goes wild in Paris, spending the nights dancing and in bed with Pierre Lapin, a chauvinist Frenchman and ex-international soccer player who owns a bistro/piano bar on the Left Bank.