About 2 Männer, 2 Frauen - 4 Probleme!?

Nick and Charlotte are a married couple. As both are more than busy earning money, there is no time for love or sex - only Tuesdays. Soon, Charlotte finds a lover, Luis, who is an unsuccessful, married artist. He and his wife Eva also have no time for sex, as Eva has to support her artist and the couple's 3 and 6 year old kids by working in a restaurant. The secret affair of Luis and Charlotte lasts quite a while, they decide to spend a romantic week in Venice, Italy. But by accident, Eva finds out about the couple and their destination. She forces Nick, Charlotte's husband, to join her on a trip to Venice in order to restore her marriage as well as his.