After 20 years of marriage, the Schöns' passion has faded. Instead, the roles are clearly divided. Katharina takes care of the household, Wolfgang stands his ground as university president. Completely unexpectedly, Katharina becomes pregnant at 40! Wolfgang is horrified, he sees his peace of mind threatened. Daughter Lena also waves him off: she doesn't want to babysit. Katharina feels left all alone. At this moment, Jan enters her life. The young and very charming lecturer adores her. What now? Katharina makes a momentous discovery: Wolfgang has been cheating on her for a year!