In 1956 France, a priest is violently murdered, and Sister Irene begins to investigate. She once again comes face-to-face with a powerful evil.

Adam and Evan live in a small village in the Cevennes. They go to the same high school but have never spoken to each other. In the middle of a holiday, while Evan is still at boarding school, and Adam lives peacefully with his mother. They will meet by chance around a joint that will go wrong. The consequences will be a week of "TIG" in this small Cevennes boarding school. The two, although very different at the beginning, will be forced to get to know each other.