四个中学的好朋友，费德里克、宝拉、格蕾希拉和法比恩，决定翘课潜入学校的地下室。然而，班里的传话王和老师的小密探米瑞安发现了他们，并威胁他们如果不让她留下参加冒险，她就要去告发他们。本来是一次朋友间恶作剧和互相取乐的亲密活动，但是却暴露了一系列关于嫉妒、恐惧、仇恨的冲突，暗恋也被曝光。同时在上面的学校，老师和校长正在寻找这五个失踪的孩子，并警告他们的家长，这无疑又导致了另外的一系列冲突。

Barbara’s behavior at school unlishes the suspicions of her teacher and the school psychologist, Sara. Talks at school with Sara, begin to reveal fears and darkness that the girl hides behind her eyes. Already convinced of her suspicions, Sara tries to get her superiors’ support as well as Barbara’s mother support to set her free out of her pain. Barbara’s mother denial, her own fear and the inaction of different institutions seem to be impossible barriers to overcome.