When his dysfunctional family clashes over the holidays, young Max (Emjay Anthony) is disillusioned and turns his back on Christmas. Little does he know, this lack of festive spirit has unleashed the wrath of Krampus: a demonic force of ancient evil intent on punishing non-believers. All hell breaks loose as beloved holiday icons take on a monstrous life of their own, laying siege to the fractured family's home and forcing them to fight for each other if they hope to survive.

Carl Casper is an acclaimed chef with a family life that seems as decaying as his artistic freedom. Those frustrations boil over into a raucous viral-videoed public confrontation against a restaurant critic who panned his cooking of food that his boss ordered him to make against his instincts. Now with his career ruined, Carl's ex-wife offers an unorthodox solution in Miami: refit an old food truck to offer quality cooking on his own terms. Now with his young son, Percy, and old colleague, Martin, helping, Carl takes a working trip across America with that truck to rediscover his gastronomic passion. With Percy's tech savvy and Martin's enthusiasm, Carl finds that he is creating a traveling sensation on the way home. In doing so, Carl discovers he is serving up more than simply food, but also a deeper connection with his life and his family that is truly delicious in its own way.