Antiques dealer Chen Xiao, who retired from the Chinese special forces, unexpectedly bought a Southern Song Dynasty bronze compass at an auction house.
The cracked compass pointed to the coordinates of a sunken ship full of classics, but it attracted the pursuit of an international cultural relics smuggling group.
From the Hong Kong pier to the rainy night escape, to the Philippine jungle through cannibal territory.
In a cave in the Philippines, he unexpectedly reunited with seven of his classmates, and they worked together to solve a thousand-year-old mystery.
Finally, on a salvage ship on the high seas, faced with the siege of mechanical sharks, he activated the ultimate mechanism of the compass.
The sunken ship turned out to be a civilized ark guarding ancient books, and the true identity of the treasure subverted everyone's understanding.