A retired man whose life among society of technologies and city jungles is coming to an end, finds himself in the body of a young man poisoned by the venom of a magical snake. His former memories have vanished; his new family lives in poverty on the edge of the abyss, and their only hope for salvation is the mysterious system “Yun Li,” which opens the Path to Immortality. Yet the world he has landed in is merciless. Here, cultivators dominate—people for whom the lives of ordinary mortals are insignificant. They determine the fate of the world through battles that destroy space itself. To protect those who have become dear to him, the hero must overcome suffering, strengthen his resolve, and prove that even a mortal who has chosen the Sword Path is capable of challenging the heavens.