Once upon a time, there was a father-in-law of the sea. When he was still the emperor of the sea, he went out with the late emperor to travel outside the Great Wall and happened to encounter flying rocks from the sky. In order to save his life, he stood in front of the emperor, and he became the father-in-law. It was also a blessing in disguise. After he came back to life, he became invulnerable to all poisons and became immortal. In order to find what he was missing, he crossed the border and came to the end of the world, stirring up trouble...
