In 1867, Li Hongzhang (played by Sun Haiying) wrote a letter to the Qing government, and the Qing government ordered the establishment of a naval academy, where foreigners taught Western naval knowledge. Deng Shichang (played by Lu Yi) came to apply for the exam, and with the help of Liu Buchan's brother and sister, he made a splash. In 1877, Deng Shichang sent his classmates to the British Royal Naval College for further studies. Four years later, Deng Shichang welcomed his classmates on behalf of the court. He ran into Liu Buchan's sister (played by Gong Jie) on the streets of London and taught the provocative foreigners a lesson. At the graduation party, the dialogue between Deng Shichang, Liu Buchan, Ito Yuheng (played by Xia Yu) and Togo Heihachiro laid the groundwork for the future maritime confrontation between the two countries. Li Hongzhang formed the Beiyang Navy and petitioned Emperor Guangxu (played by Guo Jiaming) to customize the ironclad ships from Britain, which was approved by Empress Dowager Cixi (played by Lv Liping). At the same time, the Japanese emperor called on the government and the opposition to donate salaries and also purchased ironclad ships, and Ito Hirobumi also presented a memorial of aggression. Beiyang Fleet Admiral Ding Ruchang (played by Yang Lixin) led Liu Buchan, Deng Shichang and other officers and soldiers on the "Zhenyuan" and "Zhiyuan" to visit Japan. They encountered the Nagasaki incident and the war was about to break out...