A few days before Christmas, Santa Claus (Santiago Segura), has a sleigh accident in the center of Madrid and ends up in the hospital. Luckily, Salva (Ernesto Sevilla), his roommate, is able to replace him in his sacred Christmas work. Although he is a hustler more used to selling stolen car parts than handing out gifts.
For Salva, the only way to get his family back is to accept such an endearing mission. The countdown to Christmas Eve is relentless and he still has to find Santa’s reindeer, learn to fly in a sleigh and what is even more difficult: learn to be a good person.