The novel is a dark and philosophical exploration of the human condition, set in a remote Austrian village during the Middle Ages. It follows the story of a group of young friends who encounter a mysterious and supernatural boy named Satan, who claims to be an angel and demonstrates his otherworldly powers through a series of thought-provoking and often unsettling miracles. As the narrative unfolds, the boy challenges the villagers' beliefs and perceptions of morality, good and evil, and the nature of existence, leading to a profound and controversial climax that questions the very fabric of reality and the role of a seemingly indifferent universe.

The book is a seminal work in Yiddish literature and folklore, centering around the concept of a dybbuk—a malicious possessing spirit from Jewish mythology. The narrative follows the tragic tale of a young bride in a Polish shtetl who becomes possessed by the restless spirit of her dead lover, who had been wronged by his own father and her father's broken pledge. The possession leads to a dramatic exorcism and a series of events that explore themes of love, betrayal, and the clash between the mystical and the rational, as well as the boundaries of life and death. The story delves into the rich tapestry of Jewish mysticism, community, and tradition, reflecting the cultural and religious tensions of Eastern European Jews before the First World War.