Ronja, the Robber's Daughter (2014)

S1E5 Enemy in the Fort

Ronja discovers that the boy she's been secretly meeting in the forest is Birk, the son of Borka—her father Mattis's sworn enemy. The truth strikes her like a cold wind, forcing her to confront the deep-rooted feud that has divided their clans for years. Torn between her loyalty to her family and the unexpected bond she shares with Birk, Ronja must decide whether to uphold the ancient hatred or follow her own heart into uncertain territory.