Lu Mingyu was originally an ordinary urban youth. A car accident swept his soul into the fantasy of a fairy mountain, and he transformed into Qingxuan, an outer disciple of the Qingyun Sect. During the three hundred years of cultivating immortals, he went from being a bullied novice to going through life and death, and finally became the respected Lord Qingxuan in the three worlds. But when he succeeded in overcoming the tribulation, he suddenly woke up from his fairy dream and returned to the human ward. His body was paralyzed for three years. His beloved Su Qing had already married, and his three hundred years of cultivation had disappeared. Before he could adapt to the huge gap, the peace of real life was broken. The villain Xue Sha from the world of immortality came across the two worlds to seek revenge, targeting Lu Mingyu and his mother. Lu Mingyu, who lost his immortality, started a thrilling battle with the blood evil in this mortal world, relying on his determination to protect his mother, his renewed hope in life, and his gradual discovery of the "power of caring". This is not only a collision between immortals and mortals, but also a legendary story of a man redeeming himself in a desperate situation and protecting the warmth of the world.