Fang Kun, a graduate student in the Archaeology Department of Qinchuan University, discovered that a tomb in Yin Village, Bailuyuan may be an unknown high-level imperial tomb while assisting in the recovery of lost cultural relics overseas. Mentor Yang Maochang took him to conduct a field survey in Bailuyuan, but unexpectedly sacrificed his life. Fang Kun grew up as an archaeological team member with the last wish of his mentor. The unknown tomb of Yin Village has attracted attention from the archaeological community. Fang Kun was invited to participate in the survey and reunited with his former lover Luo Qing, who has become the archaeological team leader. Fang Kun's repeated speculation from the past has sparked controversy and attention, as well as the covetousness of cultural relics criminals. Fang Kun, Luo Qing, and the head of the Public Security Bureau's cultural relics investigation team, Qi Dacang, and other front-line cultural relics protection workers organized the masses to participate in cultural relics protection. They fought against the cultural relics criminal gang led by Mu Jianhui, effectively protecting the Yincun Tomb in Bailuyuan and surrounding historical relics, and finally discovered the "Ya" shaped tomb, bringing back the Han Taizong's tomb hidden underground for thousands of years.