8-year-old Selma Traskvist and her family are in danger of being evicted from their home, when Selma meets scientist Efraim von Trippelhatt who is working to build an airship and prove Santa's existence.
The Olsson family move into a castle that turns out to be haunted. The kids, with their dim parents oblivious to all the strange things that are happening, are caught in the middle of a big mystery in the centuries old castle.
Born on a stormy night Ronja begins her life as the heir to the leader of a gang of thieves deep in the Swedish woods. There is a lot of things to beware of in the forest not least other gangs. But as it turns out they are not all bad.