A police inspector investigates the robbery of 66 safe deposit boxes at a private bank in Brussels.
De Kampioenen are about to celebrate their 25th anniversary and want their long-lost original trainer to join them. Meanwhile, an old enemy is released from prison and enters a quest for revenge.
A magic crystal causes double the number of gifts Santa can deliver all over the world and this makes for many happy gezinnetjes. His criminal assistant Basil however has a diabolical plan: he wants to steal the crystal so as to gain control over the minds of the children. The brave boy Yotan act to prevent and concocts a plan.
