"The Great And Terrible Day Of The Lord" 2020 focuses on a religious cult or isolated community that believes the end of the world, "the great and terrible day of the Lord," is imminent. The film typically explores the extreme measures they take to prepare for this prophesied event, which often involves escalating paranoia, violence, and dark rituals. It delves into the psychological horror of fanaticism and the devastating consequences that unfold as their beliefs lead them down a terrifying path, whether the apocalypse is real or a product of their collective delusion.