Introduction to the story of the FireWire Sisters: The September 18th Incident, the fall of Northeast China. Lian Bi's father, Zhao Yisheng, Bai Qian Dan Wanshui and Jiang Feng, took the initiative to organize anti-Japanese military actions to help the regional anti-Japanese energy destroy the Japan-Manchuria railway line together. When the Lian Bi family was slaughtered by the Japanese army, her father gave up. Lian Bi and her sister Bihe fled, Bihe fell into the hands of bandits, and was later helped by Hong Fei, an anti-Japanese national hero.
Lian Bi and her classmate, Prynne, signed up for the Nanjing Naval Academy to fight against Japan and save the country. Later, he participated in the anti-traitor action of the National Government, and was devastated by Wang Puppet Manchuria traitors. Jiang Feng fell off a cliff to save him. Lian Bi resolutely took refuge in Yan 'an City in pain.
Two years later, Lian Bi returned to the Northeast to develop the anti-Japanese military, and accidentally met her elder sister Xie Bihe who had been away for many years. The Bihora team took refuge in the Northeast Anti-Japanese Coalition. Jiang Feng, who survived the cliff, returned to Changchun to cooperate with the Soviet Red Army's attack, deploy troops and win the Japanese traffic fortress.
In the duel, the Lian Bi sisters died heroically, and the Soviet Red Army passed through the traffic fortress.