Ingeborg Dahlstrom puts in an ad in the Swedish newspaper Svenska Dagbladet, she is looking for a summer house. Later Ingeborg, her husband Gustaf and their 17-year-old daughter Mona travel to Stockholm archipelago, to the place they got hold of with the ad. It turns out, however, that the man they hire the house from takes a big interest in Ingeborg. But it's not only Ingeborg who gets courted elsewhere, so is Gustaf.
