It follows a young woman who infiltrates the criminal clan who killed her brother. Her plan: to murder each one of them one by one until she gets too close to their fascinating leader.
15岁的佐伊进入了一所校规森严的住宿制中学。看似正常的校园隐隐透出古怪的气息，周围的同学们面带憔悴地上课玩耍，而他们逆来顺受的表象之下蛰伏着教员们的残忍阴谋。一天，佐伊认识了玛丽，逐渐明白她们身上注定的悲剧宿命。
