In the flawless "Mirror City", the top memory weaver Ling Chen's job is to erase trauma and implant happiness for the citizens. An unexpected operation allowed him to glimpse a "false memory" that did not belong to the client and was full of earthy fragrance and real touch. This crack leads him to question the city's perfect truth. When he secretly explored the source of his memory, he discovered that the biggest lie was actually rooted in his own mind. Is he the creator of happiness, or is he a carefully designed prisoner? In a desperate journey of hunting and self-seeking, Ling Chen must find himself at the end of the maze before being formatted by the system.