At the end of the Sui Dynasty, Li Zhao, a son of an aristocrat, was regarded as an alien by his family because of his yandere personality. When his brother usurped the throne, he was framed for rebellion and imprisoned on death row. When a volcano erupts and a natural disaster strikes, Li Zhao accidentally awakens to the Wu clan's bloodline and blood bar system - he can see everyone's health and even predict life and death. Using the system, he saw that the jailer's life was hanging by a thread and encouraged the opponent to escape. The memory of an actor in his previous life made him proficient in disguise, pretending to be a loyal man and seeking refuge with Emperor Sui Yang, but in fact he secretly collected intelligence and used the chaos caused by the volcanic eruption to eliminate political opponents. He constantly exploited the weak points of his health bar to kill enemies, and turned from a death row prisoner into a separatist warlord. He eventually established a witch dynasty in the troubled times of the Sui and Tang Dynasties to protect the oppressed people.
