Lin Yuan was originally a wandering cultivator. In order to find out the truth about the murder of his parents and protect his only relative, his sister, he stepped into the turbulent world of cultivation. Although his talents were limited and his starting point was humble, he fought back step by step with his unyielding determination and perseverance. Become a disciple, travel around Kyushu, make close friends, and experience love and hatred. During this period, power struggles, realm wars, the awakening of ancient tribes, and changes in the heavens took place one after another. Lin Yuan went from seeking survival to asking questions, from protecting his sister to saving the world, and gradually understood the true heart of the Tao. Finally, when the catastrophe of the nine realms comes, he proves the Tao with his own body, turns the tide, and composes a song that goes against the sky.