Several years after their ten-year agreement came to an end, Wu Xie, Zhang Qiling, and Wang Pangzi have each gone into seclusion, but the wheels of fate never stop turning. During an accidental transaction, Wu Xie obtains a mysterious ancient sea chart. Legend says it points to a long-lost maritime empire, an ancient civilization that mastered the “art of immortality.” With the chart's appearance, secrets buried for years rise to the surface once more, and ancient legends intertwine with unsolved mysteries to set the stage for a new adventure.
Following the chart's directions, the three reunite and venture once again into a strange and unfathomable world. From the shores of the East China Sea to the depths of mysterious waters, tomb passages, lost ruins, and bizarre creatures all emerge. As their adventure deepens, they must face danger from unknown forces and uncover the countless connections between Zhang Qiling's family and the lost empire.
But time isn't the only thing guarding all of this. An ancient secret society has protected the ruins of the maritime empire for generations. They warn Wu Xie and the others that uncovering the truth will bring endless disaster. With the enemy in the open and themselves in the shadows, the pressure mounts at every turn. Wu Xie must find the key to the truth amid layer upon layer of mystery.
As the truth behind the empire's fall gradually comes to light, the three face an even greater choice: is the secret of immortality a blessing or a curse? And what are Zhang Qiling's true identity and fate? Their answers will finally emerge in this struggle to the death.
An adventure spanning history, archaeology, and destiny begins anew. The mystery of the lost empire is waiting to be unraveled.
