Chen Mo grabbed the first fragment of the Dunhuang treasure at an auction in Istanbul, but was surrounded by mysterious mercenaries.
He fled to Venice for help from the restorer Ella, and the two found the fragments of a second volume with a star map in the monastery's underwater archives.
The clues lead to the Greek island of Santorini. Lao Yang, a local Chinese geologist, takes the initiative to help, only to find that the last guardian is the granddaughter of the gang leader who was coerced.
The three volumes are combined into one, and the three-dimensional route of the secret chamber of Mogao Grottoes emerges in the volcanic cave under the moonlight.
Chen Mo used the bronze cicada as the key to ring the bell. The Chinese collector Mr. Zhang appeared behind the scenes.
"I'm going to use sound waves to collapse the secret room. There are not only national treasures inside, but also an energy source that can rewrite history!"
