The kings lesson to his future successor Kulderzipken on royal speeching is rendered ridiculous by a side effect of his diet: the word pudding keeps creeping up in every sentence, as a majestic one guarded by a Viking does in his dreams every night. Then there is a visitor: Kulderzipkens Uncle, Oom Nonkel (hence the title; both words mean Uncle in Dutch), just after they both dreamed about meeting each-other. The king now decrees by law Kulderzipken must get that pudding of his dreams, and Oom Nonkel constructs for him the Droomenoom, a machine to enter a sleeper's dream, at risk of dying if he wakes up, then Uncle disappears after telling in a dream he'll never return. Kulderzipken enters the machine and gets a trombone from her dream for the queen who needed another hobby, then enters the kings dream and trades the pudding with the Viking, who has nothing else, for something to think about. However he passes to Uncles dream while the king is waking up; Prieel and Uncle get him back just before the machine blows up.
—KGF Vissers