The old man said that after death, people have souls. Some souls scattered, some souls condensed into spirits, and continued to wander around the world for their unfulfilled wishes. The young A Chong's parents died bizarrely, and he was possessed by ghosts. One arm possessed the ability to penetrate yin and yang. A Chong, who possessed superpowers, was taken away by an expert and worked for a mysterious institution... Thirteen years later, A Chong met his childhood playmates, and since then he suffered adventures and discovered a shocking secret.