In the "Mirror City" that is shrouded in data fog all year round, Lin Mo is a "reverb cleaner" who specializes in clearing the memory traces left by strong emotions in space. Five years ago, his wife Xiaoran disappeared out of thin air in an "accident", leaving only a tampered memory. In pursuit of the truth, Lin Mo wandered into the darkest corners of the city. During a routine cleaning mission, he accidentally captured a reverberation that did not belong to the scene but belonged to Xiaoran. This faint echo is like a fuse, lighting the fuse leading to a huge conspiracy. He will fight against the giant corporations that control memory technology and uncover the erased sins and forgotten love beneath the bright surface of the Mirror City.
