Because of a misunderstanding, Plop turns into the new king! Klus, Kwebbel and Lui move to the palace, while Plop is trained to become royalty, but what happened to the real heir of the throne?

Gnome Plop expects a visit from Santa Gnome, just like every other year. Only this year things have taken a turn for the worst! Mik and Mak, two gnomes who have been forgotten by Santa year after year, steal his sleigh and as a result Santa not only loses all of his presents, but also his very important magic wand..

One day, gnome Plop receives a letter from his uncle Knap. It states that Uncle Knap is very ill and that he can only heal if he drinks the juice of the Carbuncle root, but that root unfortunately only grows in Plop's forest and there isn't enough time left. Klus decides to build a real airship with which the gnomes can fly to Uncle Knap, but the journey is difficult and not without dangers..