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..

Kristel has booked a luxurious weekend in a beauty farm. That same weekend, Josje and Karen secretly decide to help Bas in his animal hotel. But when their GPSs are accidentally switched, the three girls arrive at the wrong destination. This causes a lot of hilarious and crazy misunderstandings! But when the animal hotel turns out to be in danger, the girls of K3 must join forces to save it..

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?

K3 is special guest on a cruise ship. They have to perform on the ball, and expectations are high. But during the cruise a lot goes wrong. Especially because of all the sabotage from Elvin the Pearl Elf. Of course Hanne, Klaasje and Marthe will be singing many new songs.

Incurable romantic Lotte finds her life upended when her plans for a picture-perfect wedding unravel -- just as her self-absorbed sister gets engaged.