When Li Fangsong was sorting out his grandfather's belongings, he found half a yellowed map in the family tree. After consulting an archaeologist, he discovered that it was a map of Genghis Khan's tomb. He also accidentally discovered that the children's song his grandfather taught him when he was a child turned out to be the secret language to open Genghis Khan's tomb.
After the three Li Fangsongs were kidnapped, they were taken to the Burhan Mountains in Mongolia. After finding the tomb of Genghis Khan, another group of people appeared. It turned out that they were the descendants of the tomb guards, and the two waves of people fought in the tomb.
In the end, when the real person behind the scenes was discovered, everyone was inexplicably different.
"How could it be you?"
