Running away together turns out to be more difficult than George and Tammy imagined, with Tammy's past threatening to derail their hopes for marriage, and with George's past standing in the way of their future as a recording duo.

The President and First Lady of Country Music are on top of the world: hit after hit, award after award, and a new baby to boot. However, when a once-in-a-lifetime opportunity presents itself in Las Vegas, Tammy is forced to question whether George can handle the pressures of superstardom.

The only Christmas present Tammy wants is George's sobriety. When he cannot deliver, their relationship hits a crisis point, forcing Tammy to make a drastic threat. When George calls her bluff, however, the two legends find themselves singing much sadder songs.