Li Mingyue, a modern terminally ill orphan, participated in a dangerous experiment for medical expenses and died unexpectedly after being implanted with a chip that stored ancient and modern Chinese knowledge. However, she traveled back in time to the early years of the Tang Dynasty and became the daughter left behind by Li Shimin and Empress Changsun. The chip is perfectly connected to her brain nerves, giving her the ability to "prophet". However, in order to safeguard their own interests, the old forces tried their best to prevent Li Mingyue from using knowledge to help the development of Datang. If she fails, Datang will miss the opportunity to achieve glory and fall into internal and external troubles. Li Mingyue, who has just arrived, is unfamiliar with modern affairs and has many constraints on his actions. At the same time, due to opposing camps, she was forced to struggle to take sides between the old and new forces. The old forces had many misunderstandings about her modern thinking and behavior, and secretly sabotaged her plans, causing a crisis of trust between her and some of her old friends. However, Li Mingyue relied on his perseverance and with the help of his assistants, he continued to resolve the crisis within a limited time and promoted the transformation of Datang. Although he finally succeeded in bringing Datang to glory, he had to bear the bitter price of estrangement from old friends.
