Medusa

A group of friends, Mari and others, appear to be devout and pure, singing catchy songs about their faith. However, they secretly lead a double life as a masked vigilante gang, seeking out those who have strayed from their beliefs. After a botched attack leaves Mari injured and jobless, her views on community, religion, and her friends begin to change. She starts experiencing nightmares and visions, and feels an overwhelming urge to express her pent-up emotions and desires.