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.

Post-divorce, Tammy finds herself at the top of the charts, while George finds himself at the bottom of a glass. By pouring his sorrow into song, however, George finds career resurrection, just in time for Tammy to orchestrate a reunion tour… and make a major decision that will change her life, as well as everybody else's.