Almost 9 million civilians moved from one territory of Japan's empire to another. Many died while in service to the empire. Most eventually returned to their homelands after the empire collapsed. But hundreds of thousands of men from Southeast Asia vanished. Thousands of women in relationships with Imperial Japanese Army soldiers disappeared with their children and their men. alive :the undead empire tracks these missing people down. It tells their stories: the slave laborers abandoned, stateless and penniless far from home for the rest of their lives; the women and children sent away with their soldier partners and never heard from again.