在系列终章中，幸存者们将面对蒙面陌生人的新威胁。随着秘密浮出水面，现实与危险的界限逐渐模糊，他们的生存之战也愈发凶险。
故事发生在大约200年前的越南阮朝，探子阿坚受某村庄的邀请，前来调查神秘失踪的案子....
Focuses on Pedro, a man who receives a desperate message from an ex-girlfriend asking him to look after her senile mother, Alicia. What seems like a simple mission soon becomes his worst nightmare. Pedro needs to escape; but Alicia won’t let him…
