On the day she has her first sex ed class, 10-year-old Maya (Abigail Breslin) grills her divorcing dad Will Hayes (Ryan Reynolds) about her conception. That night, he fills her in, changing the names of the women who were in his life then to keep her guessing which is her mom: Emily, his college girlfriend when he came to New York from Wisconsin for Clinton's '92 campaign; April, edgy, a little cynical, who misses her father; and, Summer (Rachel Weisz), a writer attracted to older, established men. In demanding the story, Maya's motivation is clear: to get her dad to fall in love again with her mom. Will this parent trap work? In the telling, might Will discover his true Penelope? Definitely. Maybe.

Will Hayes' Apartment, 588 West End Avenue and West 88th Street, Manhattan.

1 Walker Street and Beach Street, Manhattan.

Gitane Café, 242 Mott Street and Prince Street, Manhattan.

Hudson Street and North Moore Street, Manhattan.

Central Park (South East Corner) Manhattan.

Montauk Club, 25 8th Avenue and Lincoln Place, Brooklyn.

Odeon Restaurant, 145 West Broadway and Thomas Street, Manhattan.

East 42nd Street (btw Park Avenue and Lexington Avenue) Manhattan.

Grand Hyatt, 109 East 42nd Street and Lexington Avenue, Manhattan.

East 66th Street and Madison Avenue, Manhattan.

Jewellery Store, 773 Madison Avenue and East 66th Street, Manhattan.

Bookshop, 304 West 4th Street and Bank Street, Manhattan.

The Mall, Central Park, Manhattan.

Zoo, Central Park (near 5th Avenue) Manhattan.

April's Apartment, 119 Kent Avenue and N 7th Street, Brooklyn.