In Xincui City, a futuristic metropolis where memories can be extracted and stored, Ling Chen works as a "memory cleaner," handling abandoned memory fragments. Cynical and embittered, his only obsession is finding his younger sister, who disappeared five years ago in an accident during a "memory archiving" procedure. One day, a mysterious woman named Su Wei brings him what seems like a simple job: recover a forgotten melody. But when Ling Chen delves into the shattered memory, he discovers that the melody overlaps with a clue from the night his sister vanished. What seemed like an ordinary job drags him into a vast conspiracy orchestrated by the tech giant Memory Anchor. In a maze of real and false memories, he must face a cruel question: when memories can be altered, how can we define who we are?
