In a Norse myth setting, Sifia, a black-feathered handmaiden, spends a fateful night with Prince Adrian by mistake and later gives birth to Fenrir, his golden-feathered heir. Her vicious stepsister Vilna steals her child and token, takes her place, and exiles Sifia to the Shadow Realm. Six years later, Fenrir awakens his golden-feather powers, and the truth slowly comes to light. After enduring countless hardships, the family resolves the conflict of light and shadow with love, saving the World Tree and the Nine Realms.
