In order to fulfill his father's last wish, Wen Bin came to the South China Sea to investigate the whereabouts of the Black Treasure. He accidentally broke into the forbidden area and encountered treasure-hunting pirates disguised as scientific research ships. He was also attacked by a deep-sea monster. When the instruments failed and several pirates who went to the sea to search for treasure were eaten by the monster, the pirates kidnapped Wen Bin's wife and forced Wen Bin to go to the sea to salvage the treasure. In order to protect his wife, Wen Bin risked his life to go to the sea. At this time, the monster was slowly approaching, pushing Wen Bin into a desperate situation. Behind the pirates, there was a shocking secret of the Qing Dynasty's treasure, which aroused the final lore...