According to an age-old tradition, a new Santa is chosen every 100 years, while the old one goes into his well-deserved retirement. This time the choice falls on Ruprecht Tumb, an ingenious inventor and technology nerd who has secretly manipulated the result. When the new Santa meets his most loyal companion, Bagolomew, at the selection ceremony, the magical glow expected by everyone fails to materialise. For Bagolomew it is clear that Ruprecht cannot be the new Santa. He sets out to find the real Santa in order to save Christmas. Beutolomäus is almost bursting with excitement. The time has come. Every hundred years a new Santa is chosen. All the Christmas creatures have gathered in the great Christmas hall. The tension is great. Any moment now, a magic crystal will float up to reveal the face of the new Santa. What Beutolomäus and the other creatures do not suspect: The magic crystal has been tampered with!