In an atmospheric, fog-laden Dutch countryside, young art student Hans von Arnim arrives in a small town to study a peculiar attraction: a carousel of lifelike female sculptures situated at an old mill. The eerie mill is owned by Professor Gregorius Wahl, a reclusive figure famous for these stone women, which draw visitors eager to see their haunting beauty. As Hans begins his research, he encounters Professor Wahl's mysterious daughter, Elfie, who suffers from a strange illness that keeps her isolated. Despite warnings, Hans becomes entangled with Elfie, drawn by her tragic allure.

As Hans delves deeper into the mysteries of the mill and its occupants, he uncovers unsettling secrets that blur the line between life and art. He learns that the mill harbors dark scientific experiments conducted by Professor Wahl, which are rooted in chilling ambitions and moral ambiguities. Driven by a desire to uncover the truth, Hans finds himself in a web of deception and horror, where the terrifying realities of the mill threaten to cost him his sanity and more. With each revelation, Hans becomes more ensnared in a nightmare that blurs his perception of reality and forces him to confront his deepest fears.