Karen, Kristel and Josje are going insane, because their three nieces are staying with them for the weekend, but they turned out to be brats without any manners. In the cloud world where the angels live, there is a 'Rascal' department where Chief Angel Manuel makes 'Rascal Angels' of children who behave like brats on earth. The children who become 'Rascal Angels' must be good for 24 hours on earth and are not allowed to violate the Angel Book. If they do make a mistake, they are punished in a very special way. Chief Angel Manuel orders his new, but very clumsy assistant Tuur to pick up the three nieces of K3, but accidentally makes a mistake and takes Karen, Kristel and Josje with him. The start of a magical adventure..

K3: Rascals

Lui eats a dangerous berry, despite Plop's warning, and grows as tall as a human. The gnomes get angry, so Lui runs away crying and gets lost in the forest. Before he knows it, he ends up in the city, causing chaos wherever he comes..