Archaeologist Shen Yan discovers a mutilated epitaph in an unnamed tomb from the early Song Dynasty, and unexpectedly returns to the eve of the fall of the Tang Dynasty. Being familiar with the history of the next seventy years, he once wanted to stop Zhu Wen from succeeding the Tang Dynasty, support the Ming Dynasty, and restore Yan Yun, but he found that knowing the outcome did not mean that he could change the times. He foresees disasters time and time again, and fails again and again in front of the web woven by military towns, food and wages, and people's hearts. Later, he no longer hoped to save the world, and only recorded those people who were not left in the history books with the medical girl Ning Zhaoye. Until the fall of the Northern Han Dynasty, in his later years, he heard someone calling his modern name in the tomb. When he woke up again, only seven minutes had passed in reality, and there was an extra list in the tomb that shouldn't exist.
