Bavaria. 1880. Hilde was dreamed into existence by the god Odin and, along with her five sisters, granted cloaks that transform them into swans. Each sister's cloak is imbued with a unique gift, but Hilde rejects her gift which allows her to lead the souls of dying creatures to the afterlife.

While guiding the soul of a hawk, Hilde meets the handsome Baron Maximilian von Richter, whose father left him no inheritance. Hilde is intrigued by Richter's longing for a greater life and strikes a deal with him: She will manifest his dreams of riches, and in return, he will take her to the human world, where the song of souls can't reach her.

But at the court of King Ludwig II in Munich, Hilde struggles to fit in. After learning that fashionable ladies are sitting for portraits, she hires non-binary Jewish artist Franz Mendelson, and is stunned when Franz renders her with swan wings. The more time she spends with Franz, the more she feels drawn to the artist's warm, understanding nature, and the more controlling Richter becomes. When Hilde's swan cloak suddenly goes missing, only Franz's ability to paint the true nature of souls can help Hilde escape her newfound prison.