The Ming Sea was strictly forbidden, and merchants along the coast were miserable. Shen Zhiwei, the daughter of a maritime merchant, has a family that has been building ships for generations, but her family was ruined because of the crime of "traveling with the Japanese". She is forbearing and tenacious, possesses superb Mohist shipbuilding skills, and vows to revive the family business and find out the truth. Lu Zhao, the imperial maritime prohibition inspector, is burdened with the unjust case of his family being framed. He has many inner conflicts and appears to be ruthless, but in fact he is secretly seeking the truth. In an accident, Shen Zhiwei was forced to deal with Lu Zhao in order to save his clan members, and their fates were intertwined in the turmoil of the sea ban. With an untimely "ink boat", she broke through the confinement of the imperial court and stirred up the storm; while he was in a high position, but struggled in the whirlpool of power and intrigue, trying to find redemption between personal grudges and the righteousness of his family and country. When the huge conspiracy hidden behind the sea ban comes to light, and when the secret of the "Mo Zhou" detonates the government and the public, can they join forces to cross the sea with the Mo Zhou, change their destiny against the will of heaven, wash away their grievances, and reshape the Ming Dynasty's maritime territory? This is not only a battle about survival and revenge, but also a tragic song and epic of personal destiny fighting against the tide of the times.