Hayley Mills returns in her role of Susan and Sharon -- only this time they have grown up and are dealing with a pair of mischevious girls who want their parents to marry. Sharons Daughter wnats her best friends dad to fall in love with her mom -- this way the two girls can be real life sisters, the problem - The two are always to busy to ever meet! The girls decide to be resourceful and call aunt Susan in on the deal. They send her on a few dates with this man, as she pretends to be Sharon. Caous ensues and eventually the truth has to come out.