Pretty student Misa arrives at new school only to find it taken over by an evil cult trying to open a portal to awaken an ancient demon. As darkness descends, thirteen girls are locked in the school with no escape. One by one they are offered as human sacrifices in bizzare and graphic rituals. Amongst lesbian affairs, cults and carnage- graduation for these gilrs means trying to stay alive. Could Misa hold the key to defeating the demon cult?