Ronya lives happily in her father’s castle until she comes across a new playmate, Birk, in the nearby dark forest. The two explore the wilderness, braving dangerous Witchbirds and Rump-Gnomes. But when their families find out Birk and Ronja have been playing together, they forbid them to see each other again. Indeed, their fathers are competing robber chieftains and bitter enemies. Now the two spunky children must try to tear down the barriers that have kept their families apart for so long.

Helen, a priest, is approached by scientist Lisbeth with a desperate plea for help. A young man, who has been sent to a high security psychiatric ward after having killed an old couple, has attempted suicide while rambling about God. Having been part of an experiment attempting to humanize inmates by assigning them pets, the young man has suddenly gone ballistic. Fearing that he will attempt suicide again priest and scientist must now confront their mutual animosities while trying to grasp the truth. In a race against time the two women begin a shocking journey deeper and deeper into the sick mind of a young man’s soul.

Through the eyes of ten-year-old Alexander, we witness the delights and conflicts of the Ekdahl family, a sprawling bourgeois clan in turn-of-the-twentieth-century Sweden.