In "Xinhai City" where memories can be extracted, traded, and even tampered with, the top memory tuner "Zero" makes a living by repairing broken memories. He is like a surgeon of the soul, wandering through the deepest past of others, but he knows nothing about his own past. A bizarre commission broke his peaceful life: in the memory of client Su Wan, her brother was replaced by a "human-shaped hollow", as if he had never existed. In the process of exploring this "memory ghost", Zero accidentally came into contact with a huge conspiracy, and the end of the clue actually pointed to his own forgotten abyss. In this forgotten sea of data and emotion, he must retrieve the truth or be swallowed up completely.
