Megumi Sunahara is born in Kyushu, Japan, in 1933 and moves to Northeast China with his parents as a child. When Japan is defeated and surrenders, he cannot get back home and ends up herding cattle at a landlord's house in Liaoning. In 1948 he enlists in the People's Liberation Army as Zhang Rongqing. He goes on to fight in the Liaoshen and Pingjin campaigns and commits himself to the proletarian revolution. The 12-episode drama ONA recounts his remarkable life and sheds light on the little-known history of PLA soldiers of Japanese descent.