20世纪末，15岁的少年榊原恒一（阿部敦 配音）由于父亲前往海外公干的原因，于是来到亡母的家乡夜见山市，暂住阿姨三神怜子（宮牧美沙代 配音）家中等待转入新的学校。在此期间，他的旧病复发，入院治疗，某晚，恒一在空荡荡的走廊内邂逅一名穿着水手服、左眼戴着眼罩但阴气逼人的美少女，这似乎预示着一段不平凡生活的开始。病愈出院，恒一顺利转入夜见山北中学3年3班，同学们热情亲和，可是似乎对他隐藏着什么秘密，而且他也再次看见医院的那名眼罩女孩——同班同学见崎鸣（高森奈津美 配音）。当他尝试接近见崎时，殊不知自己已经无意间掣动了死亡的闸门……本片根据名本格派推理小说家绫辻行人的原著及经清原纮漫画化的原著改编。
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