Lin Wan, a student at Mingde University, accidentally awakened to the reincarnation identity of a "spiritual vein host". Three hundred years ago, in her previous life, she teamed up with the monk Shen Qingci to seal the evil demon king. Now the seal is loose, and low-level demons (such as rotten mud monsters and mist-like monsters) appear one after another, threatening campus security. With the help of Shen Qingci (the reincarnation of a monk, holding a small silver sword and a soul-soothing bead) and the old curator of the ancient book library (who knew the secrets and was good at making talismans), Lin Wan gradually mastered the art of attracting spirits, repaired the "spiritual gap" left by the sacrificed spiritual veins in the previous life, and learned to refine the demon-locking talisman to strengthen the seal.
As the demon king's power continued to increase, he repeatedly set up traps to steal key props (soul-eating flowers, spiritual vein crystals), and even used Lin Wan's roommates to threaten her. Lin Wan gradually grew up from being confused and timid at the beginning to a responsible guardian. She not only had to fight against the demon king and the evil spirits he controlled, but also uncovered mysteries such as "the tampered soul-suppressing talisman" and "the connection between the soul-eating flower and the seal." At present, the protagonist group has found a way to completely eliminate the demon king - using spiritual veins as a guide, soul-suppressing beads as a matchmaker, soul-eating stamens as an assistant, and combined with the monks' essence and blood sacrificial swords, a final battle to determine the survival of the city is about to begin.