The well-known psychologist Gu Qingyue accidentally touched a strange "dusty realm" deep in the patient's memory during a bizarre hypnotherapy session. This fragment of memory bears a striking resemblance to the forgotten trauma of her childhood. As the investigation deepened, Gu Qingyue discovered that this was not a simple coincidence, but the tip of the iceberg of an unsolved family tragedy many years ago. Forced to revisit her past, she grapples with lies and repressed truths buried by time. In the process of pursuing the truth, she not only has to face obstructions and threats from the outside world, but also has to fight against the doubts in her heart about the authenticity of her memory, as well as the force that tries to trap her in the "dusty realm" forever. This journey of self-redemption will ultimately reveal a heavy secret about love, betrayal and sacrifice.