When human consciousness can separate from the body and live forever in the quantum realm, can love and memory still transcend the barriers of dimensions?
World view: In 2147, mankind has entered the "dual universe era" - the body lives in the "real earth" with exhausted resources, but the consciousness builds civilization in the "virtual realm". The virtual realm is divided between seven major forces, and the most mysterious "Annihilation Zone" has revealed secrets that can subvert human cognition: consciousness is not eternal, and every upload consumes some kind of non-renewable "soul entropy".