A widow and her husband's best friend fall in love, but even if it's what the husband wanted, is it real?

Firefighter Leo McGeary has always joked that, in the event of his death, he wants Garrett, his best friend and a consummate bachelor, to marry his wife, Audrey. One drunken New Year's Eve, he goes so far as to make Garrett promise to do so. Twelve years later, Leo dies in a freak skiing accident. Within hours, Garrett quits his job and purchases a one-way ticket to Oregon to be with Leo's family. As Audrey learns to navigate life as a widow and a single parent, her feelings for Garrett become more than platonic, and he begins to fall for her, too. But when she learns of the drunken pact made long ago, the promise that brought Garrett into her world becomes the obstacle to his remaining in it.