The head of a big engineering firm is a workaholic who neglects his pretty young wife - leading to her joining an "escort" service as a means of sexual relief. All is well, until the escort service is hired to entertain the engineering firm's clients at a swingers' party.

Erik Lund is a child psychologist and defend a doctoral thesis on the subject. His knowledge is at the very theoretical level, and he will be seriously trouble when he for a time has to babysit his sister's six children ranging in age from baby to teenager. Fortunately, the neighbor cute daughter, Lisbeth has a more practical take on things.