Ina and Klaus Heller still love each other after ten years of marriage. The ambitious architect and the busy judge lead a family life that is as harmonious as it is turbulent with their two lively children, Lisa and Stefan. However, their love life has suffered a little, and so the two are longingly counting down the hours until their offspring leave for summer camp. Like a newly in love couple, the two want to spend two romantic and passionate weeks together. Friends and acquaintances have their concerns, and Ina and Klaus actually seem to be a little out of practice in bed. Even the relaxed holiday mood doesn't quite set in, and so Klaus' call from his architect's office is quite right: Despite his vacation, he has to take care of an important major order. In order not to disappoint Ina, he pretends that he is only taking her to a luxurious wellness hotel for pleasure. In an adventurous tour de force, Klaus tries to prevent Ina from finding out about his business appointments at the hotel. But chance reveals its secret and Ina is rightly angry. The waves have hardly calmed down when Klaus has every reason to be angry with Ina, since he believes that she spent the night with his best friend and partner Erik. Instead of pure harmony, a storm is brewing and the Hellers are in the middle of the worst marital crisis.