Su Qingyuan, the legitimate daughter of the Su family in the Yunhuang Realm, was born with shattered spiritual roots. Her phoenix bones were stolen, and she spent more than a decade in a muddled state. Her elder sister, Su Lingyue, was exceptionally gifted. She seized the phoenix bones, took all of Su Qingyuan's honors, even her betrothal, and ultimately pushed her into the Abyss of Myriad Demons. When a soul from another world transmigrates into her body, Su Qingyuan awakens a Nirvana Space and pretends to be foolish while secretly making her plans. She becomes a disciple of the mysterious master Mo Chenyuan. With his affection and guidance, she repairs her spiritual roots, takes back her phoenix bones, and exposes Su Lingyue's plot to collude with the demon race. Together, the two fight against the demons and uncover the male lead's identity as an ancient deity. In the end, they protect peace across the three realms and become legends of the cultivation world.