On the surface, Ye Junyi is an idealist who retired to practice because he couldn't stand the fighting between sects; in fact, he is the reincarnation of the "Blood Sword Immortal" who was besieged by good and evil forces three hundred years ago, and his memory is gradually awakening. The truth about the siege that year hid a shocking secret that subverted the entire world of cultivation - the two high-level people, good and evil, were actually one.