Blair and Josh have been bitter rivals ever since they trained together at The Basic School in Quantico, where they were both at the top of the class, competing to be number one. After graduation, Blair got Josh's dream job, and they haven't spoken since. Three years later, their paths cross unexpectedly at the base holiday party, where the two get into an argument and cause a scene. As punishment, Blair and Josh are both assigned to Christmas Duty, where they'll work through the Yuletide together... for 24 hours straight. They plan to stay away from each other, but when a snowstorm prevents all the Christmas presents from being delivered to base, they are forced to team up for a special mission... to save Christmas.