In the upper world, a boy with a forbidden bloodline is regarded as a threat right after he is born, and is hunted down by various forces. At the critical moment of life and death, the loyal slave fled to the lower world with the young man at all costs. From then on, the boy concealed his identity and struggled to survive in this strange world. However, the shadow of the upper world has not dissipated. As his strength continues to improve, the mystery of his life experience gradually emerges.
