Commissioned by Professor Chen, Hu Bayi and his companions travel to Coral Temple Island in the South China Sea in search of the Qin Emperor's Bone Mirror. There they hire Ruan Hei and his apprentice and set out aboard the Trident. After an eventful voyage, the ship crashes into Guixu, where the group finds the ancient mirror inside a wreck and learns that Ruan Hei is an enemy of Duoling. Once they escape and stop to rest, a mysterious figure carrying a club appears and closes in on Uncle Ming, who is keeping watch through the night. The result is a 17-episode ONA that mixes adventure, fantasy and thriller.