The film was based on the popular children's book series Dik Trom by Cornelis Johannes Kieviet.
After Dik performs a magic trick, one of his friends tells the others that Mrs. Smul and a few other women are planning to gather at Mr. Mulder's house that night and to expel Kee, the so-called witch, from town.
Dik and his friends find him and force the scared and superstitious Mr. Mulder to promise to never call Kee a witch again.
After suspecting they raised enough money, Dik, Pieter and Jan find out they have an excess of 19 guilders, and deliver it to Willem and Kee together with the barrel organ.
Dik splits up the group, and gives each subgroup a homing pigeon to inform Jan about Bastiaan's location if someone happens to find him.
While Bastiaan and Voddeman are drinking jenever, they suddenly hear the noises of the pigeon and find Pieter in a cupboard.
Just when Dik and Pieter are overpowered, Jan and his friend enter the room and start attacking Bastiaan and Voddeman.