The Parent Trap

Thirteen-year-olds prim and proper Bostonian Sharon McKendrick (Hayley Mills) and tomboyish Californian Susan Evers (Hayley Mills) meet at summer camp. It's hate at first sight, as besides the differing length of their hair, they look exactly the same. After the girls carry out one battle after another against each other, the camp administrators ultimately place the two in solitary confinement, the two eating, sleeping, and playing only with each other. It is during this confinement that they finally get a chance to know each other and learn that they are indeed twins, separated when they were babies when their parents, Maggie McKendrick (Maureen O'Hara) and Mitch Evers (Brian Keith), divorced. Wanting to get to know and ultimately love the parent they never met, Sharon and Susan decide to switch places, Sharon will go to California and pretend to be Susan, and Susan will go to Boston and pretend to be Sharon. The other thing they believe is that their parents still love each other, why else had neither ever remarried. The two parents would ultimately have to "un-switch" them, when the girls hope their parents will fall in love all over again. Sharon and Susan are initially able to carry off the ruse, but in California, their plan hits a snag when Mitch introduces his daughter to a young woman named Vicky Robinson (Joanna Barnes), Vicky, who aspires to be the second Mrs. Mitchell Evers. Sharon and the domestics in the Evers household think Vicky is merely a gold digger out for Mitch's money. Sharon and Susan have to figure out a way to get rid of Vicky and bring Maggie to California more quickly than planned, so that their parents can reconcile, and the foursome can be one big happy family.

Mary Grand (Bridgette Andersen) and Nikki Ferris (Carrie Kei Heim) are best friends and they want their unsuspecting single parents to marry. Nikki's mother Sharon Ferris (the twin of Susan Carey) wants to move to New York City though. With the help of Susan, they try to get the two together.

Triplets Megan (Joy Creel), Lisa (Leanna Creel), and Jessie (Monica Lacy) have all returned from their summer vacations to discover that their father Jeffrey Wyatt (Barry Bostwick) is getting married to snob Cassie McGuire (Patricia Richardson). When Cassie hires decorator Susan Evers (Hayley Mills) to redecorate their house, the triplets believe Susan is the right woman for their father. The planning begins.

After inheriting a family resort in Hawaii, the Wyatts find it in such a run-down condition that they decide to sell it after trying to fix it up. Amidst confusing goings-on amongst the triplet teenage girls and the boys they meet, Jeffrey Wyatt (Barry Bostwick) meets an old high school rival who promises to keep the resort as-is if Jeffrey will sell it to him. He has other plans in mind, however, and they are not limited merely to Jeffrey's resort. Meanwhile, a mean resident named Charlotte Brink (Jayne Meadows) causes problems for everyone.