The Piets are facing a modern problem. Most chimneys have disappeared, and many houses today are protected by alarm systems. The poor Piets are constantly chased by the police whenever they try to deliver presents to the children. One by one, they end up in jail. While Sinterklaas is busy trying to solve the Piets’ dilemma, he is kidnapped by the wicked Dr. Brein and her henchmen, Joris and Boris. Meanwhile, Pieta and Mrs. Dakjes are trying to teach a group of young Piets the skills they need for the job. They are also bothered by Michiel who wants to interview Sinterklaas for the school newspaper. Pakjesavond is approaching fast, and for both the Piets and Sinterklaas, it becomes a race against the clock to find a solution in time and save the holiday...

Sinterklaas receives a letter from Eefje, who has a special wish. This wish is so difficult that it seems impossible. Meanwhile, Huismeesterpiet falls ill for unknown reasons and his duties are taken over by Rommelpiet. The other Pieten disagree with this because since she took charge, the castle has been a mess. Sinterklaas receives a visit from Willem de Schipper, who comes to apply for a job. But Willem turns out to be the missing piece of the puzzle for Eefje's wish.