Carrie Blake loves her job as a nanny, but while her friends are settling down, all of Carrie's time is spent with other people's families. Though it breaks her heart, her New Year's resolution is to embark on a new career and fix her lonely personal life -- but only after she finishes one last amazing job. The house is beautiful, the kids are adorable, and she's in charge of decorating the tree! There's only one problem: her boss.

Single dad Adam Fletcher might be both handsome and successful, but he's always working. Doesn't he realize he's missing out on precious moments with his son and daughter? When Adam's family arrives for Christmas, Carrie finds the perfect allies in her quest to help Adam bond with his children. But she doesn't plan on a connection forming between her and Adam -- or for his family to start feeling like the home she's always craved. With the clock counting down to the new year, Carrie resolves to give Adam and his children the best Christmas ever before leaving for good. But Christmas is the time for miracles, and happily ever after is the greatest gift of all.