In the "Memory Palace", the memories of the deceased are no longer dusty archives, but an immersive theater that can be experienced for a fee. With extraordinary empathy and precise guidance skills, tour guide Anna opens the door to the final chapter of other people's lives for guests. However, a routine guidance became the beginning of her nightmare. When Anna leads the guests deep into the last memories of a detective who died in the line of duty to hunt down the murderer, the image of the murderer is like a hot brand, deeply burned into the depths of her consciousness. What's even more frightening is that the other party seems to have noticed her as an unexpected "witness" through this thread of memory.
Anna's peaceful life collapsed instantly. The reflection in the mirror, the sense of voyeurism that follows a shadow, and the deadly pursuit that is approaching every step of the way all prove that the demon in the memory has entered reality. Forced to flee, she is shocked to realize that the detective is actually pursuing an unsolved serial murder case. Isolated and helpless, Anna can only use her body as bait to walk on the dangerous edge of reality and memory. She used her professional instinct to find flaws in the remaining memory fragments of the murderer, but this also triggered more dark echoes from the murderer, launching thrilling desperate chases in her mind. The police questioned her sanity and she had to deal with it alone. Peeling away the layers of fog, she touches upon the twisted origin of the murderer - a "Judge" born in a pool of blood in his childhood.