The Three Wise Men, fed up with Santa taking more and more prominence from them, have decided to confront each other without knowing that this war will awaken a much more dangerous common enemy, the Krampus, who had been inactive for centuries.

Toni, a grumpy in his fifties, avoids children at all costs. His life changes when he suddenly has to take care of his sister's five adopted children, each from a different country. Toni will have to deal with new parenthood and cultural differences.