At Hell's Mouth, Ronja unearths a disturbing secret about the Borka robbers. In the village, Halvert is under pressure to make the forest safe.

Ronja and Birk secretly spend their autumn days together in the forest, while Mattis creates obstacles for Borka. Cappa has a new plan.

Winter separates Ronja and Birk, who must remain inside the Mattis Fortress and the Borka Keep. Ronja learns why her father hates Borka.

It's spring and Ronja and Birk can finally reunite in the Mattis Woods. Mattis suspects that a robber stole food from the pantry during winter.

Everything has changed in the Mattis Fortress. Ronja and Birk weigh their options as their fathers' strife deepens.

Both the knights and the wile-wings are after Ronja and Birk, who must find a new refuge. Their friendship is put to a test.

The Mattis robbers struggle to get their chief back on his feet, and ask Ronja to return home. Cappa makes a new plan to capture Mattis.

Lovis has had enough of Mattis' antics. Ronja receives a surprise guest and Birk worries about the future, while Cappa reveals what is haunting her.

Mattis and Borka come head-to-head as Cappa makes her final attempt at revenge. A new phase of life begins, and Ronja must say a difficult goodbye.