The ancient world was shattered, and the reincarnation of life and death occurred. A ray of obsession in the heart of the sword awakened from the chaos and turned into a young man, Ling Chen. He carries the Qiyun Dao and holds the power of life and death in his hand. He walked out of the ancient world and traveled across the universe. He protected the common people with the heart of his sword and reconciled life and death with the Dao. Along the way, he met the enlightenment of the Eight Dao Lords, broke through the void sea of the universe, broke through the barrier of the source of Hongmeng Dao, and discovered the secrets of the ancient path in the realm of no Dao. Finally, he used the heart of the sword to merge all the Dao in the heavens, destroy the true source of illusion, and penetrate the ancient mystery. From the birth and death of the ancient world to the eternity of the universe, from the origin of Hongmeng to the long river of time and space, Ling Chen used the power of a sword to protect the safety of all souls, letting the light of the sword's heart illuminate the eternity, and wrote a legend with protection as the core and eternity as the end.