Shawn and Eddie Wagner were the picture of a perfect couple, living a charmed life with three adorable little girls. But that all came to an end when Shawn suffered a miscarriage and the tragedy tore them apart. Now divorced, the couple remains connected--by their children and by a chemistry that, one fateful night, proves too powerful to resist.

When Shawn discovers she's pregnant again, it seems like a disaster. After all, she's already a single mother of three, and Eddie has moved on with someone new. Still, as Shawn's belly grows, so do the glimmers of the love she and Eddie once shared. But can one new baby really add up to one big happy family?