Warring godparents Holly (Katherine Heigl) and Messer (Josh Duhamel) find themselves holding baby Sophie when her parents die in a road accident. The chalk-and-cheese combination, who loathe one another after a previous date ended in disaster, have to put their differences behind them to give their new charge a loving home. But it ain't gonna be easy. All the usual rom-com boxes are ticked in a lightweight affair lifted out of the ordinary by appealing performances from Heigl and Duhamel plus Sarah Burns's blubbing social worker.
A car crash wiping out a young couple and depriving a little mite of her mum and dad isn't the sort of stuff of which comedy is made...you might think.
Yet Katherine Heigl and Josh Duhamel mine comedy gold - well, tin if we're being honest - as the godparents who find themselves awarded custody of little orphan Sophie.
They've got to change nappies, organise child care, mash organic food and nurse the nipper with the added complication that they can't stand the sight of one another.
Heigl's Holly, an ambitious caterer, and Duhamel's Messer, a boorish TV sports director, are locked in an unbreakable cycle of mutual loathing that dates back to a misfiring blind date that ended in name-calling disaster.
She's been out of a relationship for three years and is preoccupied with building up her cake-making business while he's a totty-bedding sports jock who prats about on a Triumph Bonneville.
Forced to share the same house, they have to keep their tempers while calmly dealing with a nipper still heavily traumatised by the loss of her parents.
An awkward combination of melodrama and romantic comedy, this eventually careers full pelt down the latter route, lassoing in a supporting cast of gay parents, nymphomanic neighbours and Josh Lucas's impossibly nice paediatrician.
Still, Heigl's always watchable and it's a pleasantly undemanding effort even if its premise is worryingly close to the 2004 TV film Raising Waylon.