At the end of the Ming Dynasty, Lin Xiao, an officer of the Ming Navy, who returned to his hometown after a shipwreck, accepted the call of Admiral Xiang Ji to stop the Japanese pirates from obtaining the "Magic Machine Arsenal" and to find his missing comrade-in-arms, Boss Lu. He once again embarked on a dangerous treasure hunt. During the voyage, a group of mysterious sea monsters, both ferocious and bloodthirsty, and a greedy and cunning pirate organization targeted Lin Xiao's ship. Lin Xiao must join hands with his companions to fight wits and courage with the cunning Japanese pirates and the ferocious giant octopus sea monster to complete the task of obtaining the "Magic Machine Arsenal"...