What if you spent your whole life wishing for something you didn’t know you already had? Hallie Parker and Annie James are about to find out. Hallie is a cool girl from California. Annie is a fair rose from London. When the two accidentally meet at summer camp, they think they have nothing in common except…they’re identical twins! Now they’re up to their freckles in schemes and dreams to switch places, get their parents back together and have the family they’ve always wished for!

In London, Iris Simpkins write a wedding column in a newspaper and has an unrequited love for her colleague Jasper Bloom. Nearby Christmas, she is informed that Jasper is engaged and will marry another colleague, and her life turns head over heels. In Los Angeles, the movie-trailers maker Amanda Woods has just broken with her unfaithful boyfriend Ethan and wants to forget him. Amanda access a house exchange website, and impulsively swaps her mansion for Iris’ cottage in Surrey for the holiday along the next two weeks. While in Surrey, Amanda meets Iris’ widow brother and book editor Graham and they fall in love for each other. Meanwhile Iris meet her next door neighbor, the ninety year old screenplay writer Arthur, who helps her to retrieve her self-esteem, and the film composer Miles, and they fall in love for each other.

Nick, a somewhat chauvanistic advertising exec hot shot, has his life turned haywire when a fluke accident enables him to hear what women think. At first all he wants to do is rid himself of this curse, until a wacky psycologist (played to perfection by Bette Midler) shows him that this could be used to his advantage! His first target is Darcy McGuire, the very woman that got the promotion he wanted. But just as his plan is beginning to work, love gets in the way…

Harry Langer (Nicholson) is an aged music industry exec with a fondness for younger women like Marin (Peet), his latest trophy girlfriend. Things get a little awkward when Harry suffers a heart attack at the home of Marin’s mother Erica (Keaton). Left in the care of Erica and his doctor (Reeves), a love triangle starts to take shape.

Harry Langer (Nicholson) is an aged music industry exec with a fondness for younger women like Marin (Peet), his latest trophy girlfriend. Things get a little awkward when Harry suffers a heart attack at the home of Marin’s mother Erica (Keaton). Left in the care of Erica and his doctor (Reeves), a love triangle starts to take shape.