An eighteen-year-old girl, Luo Yin, is expelled from human status right after transmigrating, reduced to a sacrificial array eye, and even forcibly transformed into a treasure-seeking rat. Burdened with her family's ancestral Heavenly Mystery Talisman and a mysterious divine treasure, she is hunted down by the demonic cultivator Ming Ye and the evil cultivator Chi Xiao, but fortunately protected by Shen Jingci, a disciple of the Illusory Wander Sect. The two mistakenly forge a Dao companion symbiotic pact, binding their fates together. To break her curse and repair the heavenly gap, Luo Yin and Shen Jingci set out along the way to collect the scattered fragments of the divine treasure. After enduring the annihilation of the Xiao family, the seizure of power in the Southern Border, and the decisive battle against Ming Ye, they finally use the Heavenly Mystery Returning Order Formula to suppress demons and mend the heavens, guarding the Nine Huan Continent.