Hallie Parker lives with the most wonderful dad in the sunny California, and her age mate Annie James lives with a beautiful and loving mother in the foggy London. Hallie is dreaming of having a mother, while Annie wants to find a father for her. When the girls meet at a summer camp, they realize they have something in common. And this “something” is not interests or hobbies. It turns out that they are twins, and their parents have divorced many years ago. The sisters begin to act. Hallie returns to London, and Annie goes to America. Their unsuspecting parents easily fall into the trap…