Two high school boys were hanging around in a ruined building. One of them went into a dark room when he heard a sound from it. There was something unknown and each of the boys were robbed of their hearts. And a little boy and his sister drops by the building…

兩位高中生在一座廢棄的樓房裡蹓躂玩耍。其中一位聽見了黑暗的房間裡傳出陣陣的怪聲，便進去探個究竟。殊不知一個怪物卻搶走了他們的心臟。而接下去的日子，這裡也來了兩位兄妹...