故事設定在20世紀90年代末的越南西南部鄉村，講述了年輕女子Lan（Ph??ng Thanh飾）在父親去世后，前往一位名叫Danh（M?c V?n Khoa飾）的鰥夫家中擔任女傭。她很快發現這座房子隱藏著可怕的秘密：神秘的死亡事件接連發生，村莊中流傳著關于“守財靈”的傳說——一種通過黑暗儀式召喚的靈體，用于守護財產，但會對陌生人造成致命威脅。Lan與一位名叫S?n（Qu?c Tr??ng飾）的恐怖小說作家聯手，試圖揭開這些離奇事件背后的真相。

　　ISSAC is an intense psychological thriller which constantly treads the lines of reality and fiction. Issac, A young reclusive mortician who inherited his stepfather's mortuary business meets a friendly waitress, Cassi. The two create an instant connection and after a night of terror, they pursue a revenge murder together. This film mixes a realistic story with surreal imagery, showing how one in isolation may operate due to the circumstances he has been given. Issac inevitably makes a choice and never questions the morality of his decisions.

這是三部曲的最后一部，故事圍繞著將自己奉獻給撒旦的妓女展開。這部影片的內容是極端而黑暗的，令人作嘔的情節屢屢出現，充斥著暴力，性，裸體，體液！一群女孩子和一個男人摳喉嚨催吐，然后吃掉嘔吐物，再吐出來……

 When a young woman faces a deadly diagnosis, she seeks dark magic from a witch in the woods... but every cure has costs.