It is summer in Sweden, and the Andersson family has decided to go on vacation to Greece. The trip turns out to be too expensive, especially when Håkan destroys a shelf in the travel agency. Rudolf decides that they should go on a caravan holiday instead. When they start the journey, Karin runs over Rudolf's foot with the caravan and they have to go into a hospital. There, Rudolf gets his foot bandaged by Lenny, a medic who is pretending to be a doctor. At the hospital Sune meets a girl named Cornelia and falls in love with her, but he makes a fool of himself at a candy vending machine.