In medieval Britain, a mysterious creature lurks in the misty landscape, bringing ancient legends to life and transforming them into a terrifying reality, forcing the villagers to confront an ancient, supernatural threat.

In 1750 Austria, a deeply religious woman named Agnes has just married her beloved, but her mind and heart soon grow heavy as her life becomes a long list of chores and expectations. Day after day, she is increasingly trapped in a murky and lonely path leading to evil thoughts, until the possibility of committing a shocking act of violence seems like the only way out of her inner prison.