Following a horrific accident, a woman voluntarily becomes a test subject to an artificial intelligence designed to rehabilitate her. In a world dependent on machines, she learns not all technological advancement has humanity's best interests in mind.。本片讲述了几个少年人的青春故事,围绕在身边的友情和亲情帮助他们更好的成长,让他们无拘无束的享受着欢乐肆意的青春。。故事以一連串女高中生離奇死亡的事件開始,深陽學園2年C組的女學生宮下藤花原來隱藏著「Boogiepop Phantom」的第二重人格,行為奇異,究竟宮下是否這些死亡事件的主谋? 「Boogiepop Phantom」到底是都市中傳說的死神,還是正義的使者?。