Bah humbug. Jack Donovan, aka Mr. December from the Sexy Public Servants Charity Calendar, has no time for Christmas. This police detective is more troubled by the fact that veterinarian Kat Saunders is running an unpermitted, no-kill animal shelter out of her clinic. But when he needs help on an urgent case of an injured puppy, Christmas loving Kat comes to the rescue.

Kat needs a Christmas miracle. She's determined to succeed in her dream career of helping all animals, both pets and strays. She won't let a few neighborhood grinches stand in her way. Jack agrees to help Kat with her legal issues, and as they work closely together to save the puppy and the clinic, sparks ignite. As they draw closer, Kat wonders if some holiday magic might thaw Jack's heart and turn this Scrooge into Kat's true love for all seasons. A Christmas kiss under the mistletoe may be what it takes to find out...