During the Jiajing period of the Ming Dynasty, Japanese pirates swept along the coast like a ferocious tide, plundering the people wantonly and disturbing the peace of the coast. Canglangmen was brutally massacred by the "Iron Clothes League" supported by Japanese pirates because it hid the fragments of the "Haiyue Scripture". For a time, rivers of blood flowed and corpses were everywhere. The eldest disciple, Shen Canyang, was burdened with the blood feud for the annihilation of his family. He jumped from the cliff with the secret formula for hiding the scriptures hinted by his master before his death, and survived by chance. At the same time, the imperial naval officer secretly controlled the game between Jianghu forces and anti-Japanese forces. Shen Canyang knew that the enemy was the "Iron Clothes Alliance", but he understood better that if he wanted to avenge his division and completely eradicate the Japanese invasion, he must unite with the anti-Japanese rebels. He cleverly took advantage of the generals' greed for merit and carefully set up a decisive battle.