When Chen Fei found clues to the second volume of Yongle Dadian in Dunhuang, he was besieged by international cultural relic dealers.
At a critical moment, the mysterious female archaeologist Lin Xue descended from the sky, holding fragments of ancient books and joining forces with him to break out.
The two fled to Istanbul's black market auction, targeting the Yongle Treasure Ship Star Map that recorded the coordinates of overseas treasures.
When the treasure ship model was photographed and triggered the secret room mechanism, the hidden map was snatched away by mercenaries who suddenly appeared.
