In the "Mirror City" where technology can tamper with memory, Ling Zhou, a top memory master, can weave perfect dreams for anyone, but he has forgotten only his own past. He was like a prisoner, trapped in a flawless cage built by his own hands. Until one day, a mysterious woman named Su Wan brought a dusty pendant and asked him to restore a deleted memory. The moment Ling Zhou touched the pendant, the dam of forgetfulness suddenly burst, and shattered images swept over him. He realizes that retrieving her memory may be the only key to finding his own identity. A dangerous game between reality and fiction begins.