Mont Foster

Mathieu and Chloé decide to spend some time in their chalet on Mont Foster in order to recharge their batteries after a painful experience. But their peaceful retreat is disrupted by strange events that cause Chloé's already fragile mental state to further deteriorate. She becomes convinced that a real danger lurks in the surrounding forest. Mathieu tries to keep a cool head by focusing on the practical, but he feels powerless as he watches his wife descend into madness.