When dance hall singer Louisa Bell visits Fort Reno to see her brother, she is mistaken for the governess that the harried Major Daniel Adams is waiting for. Between his rowdy troops and his two daughters, he has more responsibility than he can handle alone. Eager for the opportunity, Louisa sets out to show the widower that she is a perfect fit.

Ashley Davison, a graduate student in California, desperately wants to spend the holidays with her family in Seattle. Dashiell Tyler, a former army intelligence officer, receives a job in Seattle and must arrive by December 23. Though frantic to book a last-minute flight out of San Francisco, both are out of luck: Every flight is full, and there's only one rental car available. Ashley and Dash reluctantly decide to share the car, but neither anticipates...