Leigh Townsend may secretly think that her boss, Nick Romano, is sex on a stick, but experience has taught her not to trust her hormones when it comes to men. Still, when filled with Christmas "cheer" at the office holiday party, it makes sense for the two consenting adults to indulge in a night of love. The trouble came when Nick awakens with no memory of the magical evening and Leigh discovers that at the end of nine months, she will deliver a Christmas Bonus.
Nick has had his eyes on Leigh for a long time, but has never been able to work up the nerve to ask her out. At the office Christmas party, he has high hopes of changing all that, but due to someone spiking the punch which interacted with his cold medication, he misses his chance. But Fate is kind. When Leigh discovers she's pregnant and the baby-daddy is a no show, Nick takes the opportunity to show Leigh how good he would be as a husband and father.
What will Nick do when he discovers he's the natural father...and that Leigh failed to tell him even when she knew he wanted her and her child?