A quirky, dysfunctional family's road trip is upended when they find themselves in the middle of the robot apocalypse and suddenly become humanity's unlikeliest last hope.

Working through some difficult decisions, Mitchell family matriarch Phylis and patriarch Bill, have summoned their two grown sons – TV stars Mike Mitchell and Brandon Mitchell – home for the holidays. It is their hope that bringing the family together to recreate the Christmas house, will help them find resolution and make a memorable holiday for the entire family and community.

The Mitchell brothers compete to see who can create the best Christmas House.