Lin Wanxing, an ordinary orphan girl, is known as a "waste" with five spiritual roots, but she hides a lost physique called "All Souls Body" that can be compatible with all spirits and purify evil spirits. Qingyun Sect's request for enlightenment was rejected. In a desperate situation, she met Shen Qingci, a high-cold swordsman who was seriously injured. She begged for death and finally made an exception to accept him as a disciple.
In the cold pool to heal her wounds, she struggled to draw energy but awakened the power of spiritual growth. When Black Wind Ridge was in danger, the master and apprentice showed an initial understanding of each other and saved Xiaobai, the nine-tailed spirit fox. The undercurrent of the Qingyun Sect was turbulent. When the elders were trapped and fellow sects were chasing after her, she burst out with all the spiritual bodies for her guardian, shocking her knowledge of good and evil - and Shen Qingci also protected her by breaking the obsession of "good and evil are incompatible". The sword heart gradually grew from aloof and killing to gentle protection.
From exploring the devil's abyss to traveling in the human world, from fighting against the Immortal Sect's intrigues to resolving disputes among the demon clan, the master and apprentice journeyed into secret realms, solved conspiracies, and overcame heavenly tribulations. In the world of cultivation where the jungle prevails, they use the bond between master and apprentice to fight against the coldness of the world, and break the opposition between good and evil with their "all-inclusive" Taoist heart. In the end, the spirit body and the sword heart merged transparently, and the clear light accompanied the evening star, creating an eternal legend that spanned the nine heavens and three realms and broke through "isolation" with "symbiosis".