It's Christmas, and Navy pilot Michael Kavanaugh is home from deployment with a "Dear John" letter in his pocket. In spite of a rather serious case of Bah–Humbug, Mike heads to Christmas, Michigan, to spend the holidays with the York family. But then he meets Merry York, and spending Christmas in Christmas doesn't seem such a bad idea after all.
That is, until Mike discovers Merry has a present she's been hiding. She's five months pregnant! As attracted to Merry as he is, Mike isn't prepared to be a father and husband after only seven days.
But in a town called Christmas, almost anything can happen.