![Insidious: The Last Key](https://midasfilm.com/wp-content/uploads/2024/04/nb9fc9INMg8kQ8L7sE7XTNsZnUX-185x278.jpg)
Pastor Park is head of a religious investigation center that exposes cults and cult leaders. While looking into a suspicious new religion called Deer Mount, he slowly uncovers clues that connect this cult to a series of mysterious cases of missing teenage girls when a body is found inside a damaged tunnel beams. He begins to uncover dark secrets surrounding this cult and its enforcer Na-han.