In contrast with the realism of most of the Balzac's best known works, the novel delves into the fantastic and the supernatural to illustrate philosophical themes. In a castle in Norway near the fjord Stromfjord, Séraphitüs, a strange and melancholic being, conceals a terrible secret. Séraphitüs loves Minna, and she returns this love, believing Séraphitüs to be a man. But Séraphitüs is also loved by Wilfrid, who considers Séraphitüs to be a woman (Séraphîta). In reality, Séraphitüs-Séraphîta is a perfect androgyne, born to parents who by the doctrines of Emanuel Swedenborg have transcended their humanity, and Séraphitüs-Séraphîta is the perfect example of humanity.
