Three thousand years ago, swordsman Lin Yuan was hunted by the ancient monster organization "Xu" and accidentally escaped into the earth - a "spiritual star" without aura. Three thousand years later, she disguised herself as a senior high school girl and lived an ordinary and lively life, until the sky opened and a monster beast descended. After killing Taoyuan, Lin Yuan thought he could continue to hide, but found that everything was just the beginning.
A vague sword energy was wandering around the campus, but she could never find the source. A cowardly little beast fell out of the crack, claiming to be a civilian killer sent by the "Xu", crying and begging for shelter. What's even weirder is that Lin Yuan saw a scene from three thousand years ago in the depths of the sea of consciousness - the sword that had been with her for three thousand years was actually thrown into the Kunlun Ruins after sealing up her memory with her own hands.
Thirty-seven people, each holding a fragment. Three thousand years later, on the day of reunion, the puzzle is complete. The promise left by that team back then is being revealed bit by bit. What Lin Yuan didn't know was that the sword energy that she could never find the source of was actually always by her side and never left.