Shen Mo, a useless disciple who was overwhelmed by debts, picked up a woman in white who had lost her memory in a desperate situation. He thought it was just a brief glimmer in his life, but he didn't know that she was Luo Wuxia, the demon king who trembled in the three realms.
The Tiandao Palace undergoes a sudden change, the Immortal-Zhu Immortal Formation collapses, the earth's veins in the Three Realms are broken, and spiritual disasters and demonic disasters sweep across the common people. The fanatical Jingshi Sect regards them as the source of disaster, and the vicious All Souls Alliance targets them. From the Qingyun Sect to the ruins of the North, from the Immortal Burial Mountains to the endless sea of sand, the two of them were chasing and fleeing, and gradually came across the shocking conspiracy behind the disaster - someone was trying to awaken the ancient god of chaos and reshape the Three Realms.
Shen Mo used his mortal body to illuminate the way of guardianship, and Luo Wuxia put aside the pride of the Demon Lord and regained his original intention. When the altar in the golden sand sea lit up with the world-destroying light, he activated the dragon's veins to hold back the sky, and she sacrificed chaos to shatter the void. This world-shaking battle is not only to restore clarity to the world, but also to prove that even a faint light like a firefly has the power to illuminate mountains and rivers.