Karl is a well-established publisher and hard-nosed businessman who, simultaneously with his marriage, tries to find time for his mistress, Sabrina, when the calendar permits it. One day Sabrina’s husband, Oscar, bursts into his office and asks him to intensify the affair with her. Otherwise, he will reveal everything to Karl’s wife, Mona. What lies behind this? A delightful comedy with multiple confusions, intrigues and unexpected meetings where the women soon find themselves in the leading positions.