Lu Fang Yin is a very beautiful and smart girl, since childhood her uncle taught her very well and taught various martial arts and swordsmanship. In addition, Lu Fang Yin was also equipped with the knowledge of war strategies by his uncle who served as a general in the kingdom of Xia. Finally, as an adult, Lu Fang Yin grew up to be a very handsome girl and often disguised herself as a man. When she became a man, Lu Fang Yin used the name Fang while every day she was called Yin Er by his uncle and family. Lu Fang Yin had a friend named Wu Quan Qi whom he called Qi Er and the two of them were very close, unfortunately, there was a war and they got separated. Yin Er is very sad as well as Qi Er, the two of them never see each other again until they grow up, both of them look for their respective best friends. The prolonged war makes Yin Er and Qi Er finally meet but they don't realize it. Will the two meet again and recognize each other? then how will the two of them face their problems because it turns out that both of them are on opposite sides of each other. Follow the story of Yin Er and Qi Er in The Love Song Of Two Enemies.