Tim (Brenton Thwaites) and Kelly (Karen Gillan) carry a dark and heavy past, watching their parents die tragically in front of them, which has become an unhealed scar in the memory of the two siblings. Time flies, but the pain has not faded. During this period, Tim and Kelly have never given up the opportunity to seek the truth. Finally, the hard work pays off. The two found that the initiator of all the tragedies was hidden in the antique mirror at home. In order to end the tragedy, Tim and Kelly returned to their hometown to destroy the mirror. What they didn't expect was that their actions inadvertently became the key to open the door to hell. Blood, fear, anger, sorrow, in the overwhelming memories, they began to wonder what is illusory and what is real.