During a maintenance work, the spiritual master Lin Yao accidentally came into contact with an abnormal spiritual core containing "painful memories" and glimpsed the dark truth that was covered up when the Sky City was founded. In order to explore the truth and save the deceived people, he joined forces with Evelyn to fight against the iron-fisted rule of the Parliament, and finally revealed the nature of the Spiritual Essence - it is not unconscious energy, but an ancient consciousness imprisoned from the depths of the earth.
