Megan is dreading going home for the holidays after leaving local golden boy Isaac at the altar four years ago to run away to the big city. Christian hates his family's pity eyes every Christmas he shows up on his own. So when the two meet in a Dublin pub, they come up with a pact: to be the very best fake dates for each other, ever.

Rules are drawn up, and a contract is signed on a wine-stained napkin. They'll sit through family gatherings and be outrageously in love until freed from their obligations. After all, it's only for a few weeks. But with two big families to deal with alongside old friends, old flames, and old feelings, things are bound to get messy. And when a snowed-in cabin and a little Christmas magic are added to the mix, anything could happen . . .