In the "Mirror City" where memories can be edited and deleted, Lin Zhou, a top memory weaver, lost his core memory after an accident. All that was left in his mind was the back of a woman in red that flashed repeatedly, and an inexplicable, heartbreaking sense of urgency. In order to find "her" and his lost self, Lin Zhou embarked on a dangerous path. Before he is eliminated by the system, he must sneak into the most complex memory maze built by himself and uncover the cruel truth hidden under the bright surface of Mirror City.