In 1945, World War II ended with Japan surrendering to the United States. But for the majority of Japanese in Brazil, Japan had won the war and defeat was nothing more than American propaganda. In Brazil, immediately following the war, the Japanese immigrant population found itself greatly repressed by the Brazilian state. For this immigrant community, being oppressed in a foreign land and the idea of military defeat was very painful. Fueled by the ignorance forced upon the Japanese by the Brazilian government, numerous organizations sprang up, propagating the "truth" of Japan's victory and with a goal to repress the "defeatists", i.e. the "dirty hearts". Takahashi, a photographer from a small provincial town, reluctantly becomes a member of such an organization. As a member, decisions are made by him and for him that end up transforming him into a killer. Takahashi's wife cannot bear to witness the changes that are happening to her husband. She refuses to give up on him or their marriage without a fight.