Chiloé Island, 1880. After her father is murdered by a German colonist, Rosa (newcomer Valentina Véliz Caileo), a 13-year-old Huilliche girl, renounces her Christian upbringing and seeks shelter with Mateo (Daniel Antivilo), the leader of an Indigenous organization that practices witchcraft. Under Mateo’s gruff yet tender tutelage, she learns the art of sorcery and vows to settle the score. Rosa’s vengeance leads to a brutal crackdown by the island’s Chilean Christian authorities and puts her on the path to discovering her dormant powers.