She is a cold-blooded killer, and an accident sent her into a strange ancient world. The situation in the town is treacherous and undercurrents of power are surging. In order to survive, she must control the situation with wisdom and cold-bloodedness. Bai Zhi, the once ignorant sister, gradually grew into a courageous partner under her sister's guidance. Dark night sneaking, assassination plans, revenge and conspiracy are intertwined, and every step is related to life, death and the future. They used their own strength to gradually tear apart the enemy's conspiracy and let chaos become their own sharp blade. Amidst the light of swords and fire, they write their own cold-blooded legends, and the undercurrent of revenge and intrigue quietly sweeps the entire world.