Modern archaeologist Lu Chengyu was involved in a time and space storm due to an unearthed jade pendant with a dragon pattern at the moment his mother was critically ill, and traveled back to the troubled times of Handan in 257 BC. In order to repair the jade pendant and use the Xianyang Palace star dial to return to modern times to see his mother for the last time, he accidentally rescued the young Ying Zheng who was turned into a hostage. From then on, he was involved in the whirlpool of the Warring States Period. In the name of "Meng Yi", he became Ying Zheng's most trusted assistant.
He once swore an oath to "go home immediately after helping Ying Zheng ascend to power", but as he got to know the young emperor, accompanied by the faith of Su Wan, an orphan girl from the medical family, and resonated with the soul of Yun Shu, a member of the stargazing family, the boundaries between his return journey and his destination gradually blurred. His former colleague Jiang Zhe's betrayal, Ying Zheng's alienation from power, Su Wan's death, and Yun Shu's deep sleep made him struggle between "going home" and "staying" again and again.
The cracks in the jade pendant are getting deeper and deeper, the star dial is close at hand, but the mother's figure is getting further and further away. When the six kingdoms were unified and Ying Zheng ascended the throne, when Shaqiu was resentful and the Qin Dynasty collapsed, Lu Chengyu gained a thousand-year life due to the aftermath of the star dial. From then on, he held on to the broken jade pendant and unfulfilled promises. In the two thousand years, he went through the changes of dynasties and suffered the regret and loneliness of "forever missing".
This is a redemption that spans two thousand years in time and space, a fateful entanglement between kings and ministers who know each other and are apart, and an ultimate inquiry about "choice and price" - he spent his whole life assisting an emperor, and spent a thousand years completing a silent farewell to his mother, his old friend, and himself.
