The Witch: Part 3 (2025) expands the series’ haunting universe, combining Korean horror with science fiction to deliver an intense and suspenseful experience. Shin Si-ah reprises her role as the enigmatic protagonist, taking the story into darker and more unpredictable territory.

Continuing from the previous installment, her character—a powerful but tormented witch—faces the consequences of past battles. As she pieces together her fragmented past, she uncovers an ancient prophecy that foretells the rise of a cosmic darkness, one that only she can prevent or unleash.

Beneath the surface, a sinister extraterrestrial force begins to reveal itself: a forgotten entity from an ancient interstellar war, secretly manipulating events to exploit its abilities for its own benefit. With the power to distort reality and induce terrifying hallucinations, this entity becomes her most terrifying adversary yet. To combat this imminent threat, she joins forces with exiled scientists and renegade sorcerers, aware of the cosmic horror threatening their world. Together, they embark on a perilous journey through desolate wastelands and hidden high-tech laboratories, searching for a way to resist the entity’s growing influence.

The climax unfolds in a harrowing battle where magic collides with advanced technology. In a desperate act, she decides to sacrifice her own powers to seal the entity away, but at the cost of her identity and memories. As the situation calms, her fate remains uncertain, leaving behind a haunting question: has she truly won, or has she unleashed something even more sinister?

With its captivating blend of horror, science fiction, and psychological tension, The Witch: Part 3 takes the franchise to new heights, anchored by Shin Si-ah’s riveting performance.