This drama is the first time-travel drama, which is adapted from Huang Yi's novel "Searching for Qin". This paper mainly tells the story of Xiang Shaolong, an elite G4 in the 20th century, who traveled through time and space to find Qin Shihuang in the Warring States Period more than 2,000 years ago.

Xiang Shaolong is ready to start his epoch-making journey, returning to China in the Warring States period more than 2,000 years ago and Xianyang City in the year when Ying Zheng, king of Qin, ascended the throne. Who knows that the space-time shuttle suddenly broke down in operation and was sent to Handan, Zhao, one year before Ying Zheng, the king of Qin, ascended the throne.

After the death of King Zhuang Xiang, Ying Zheng, pretending to be Zhao Pan, succeeded to the throne. Ying Zheng, a minor, still failed to be crowned officially, which enabled Lv Buwei to take power in the name of Regent and began to plot against Xiang Shaolong. Xiaolong saw that Ying Zheng was becoming more and more deliberate, and his behavior was even more terminating. He is no longer Zhao Pan, and he feels helpless.

Knowing that a dead rabbit cooks a dog, he decided to help Ying Zheng retire to the Great Wall after getting rid of Lv Buwei and Ai. In order to protect the mystery of his life, Ying Zheng was seduced by Xiang Shaolong. At that time, the three parties were intrigued and had their own plans, and the coronation ceremony was even more sinister.