In the future city "Silent City" where memories can be accurately removed, Li Shuo, a top memory weaver, can erase any pain for his clients, but he cannot eradicate the nightmare about his sister's death in his own heart. In a seemingly ordinary memory erasure commission, the client actually asked to forget about a "rusty silver butterfly" - a secret that only belonged to him and his sister. Behind the commission, a mysterious organization called "The Whisperers" surfaced. They seemed to be collecting forgotten memory fragments, trying to piece together a truth that could overturn the entire world. Li Shuo is forced to embark on the road of search. In the maze of tampered and forgotten memories, he must find not only the truth, but also his lost self.
