A bloodbath of revenge against the Japanese pirates begins! In the 32nd year of the reign of Emperor Jiajing of the Ming Dynasty, Japanese pirates invaded the southeastern coastal area, and in order to combat them, the Military Bureau of the Ming Dynasty decided to produce a new weapon called 'Bimengpo'. 'Nogi', who was appointed as the person in charge of the Sergeant Bureau, completes 'Bimonpo' after three years of hard work, but in a chaotic situation, not only his family but also his colleagues are brutally murdered. 'Nogi', who barely survived, begins to seek merciless bloody revenge on the Japanese pirates who killed his family and colleagues...