Hypochondriac Hermann Ladner is invited on a Mediterranean cruise by his late wife's brother, Heinz Wucher. However, Heinz gambles away the money for the tickets and Hermann sets off for Italy in his caravan. Heinz, meanwhile, has sneaked into the caravan and travels along as a blind passenger.

The young fashion designer Laura floats in the seventh heaven: After she has found an engagement ring with her friend Alexander, she is sure that he wants to use the joint visit to his parents to officially stop her hand. However, the family weekend is not a good star. Alexander's self-confident mother makes Laura feel that she is not good enough for her son. To make matters worse, even his ex-girlfriend Susanne appears, who leaves no stone unturned to win Alexander back.