There are only a handful of children living in Bullarby. This film follows their story through the fall and winter, picking up at the moment "The Children of Noisy Village" finishes.

Ronia 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 Ronia 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.

The Spanish fly is the name of a varieté artist who for some 24 years ago had a son. Now the son pops up looking for his dad.

The omen (Förebudet)