Kyoko is a young widow who lives alone with her daughter Marika. Before she was born, Kyoko lost her husband and newborn son in a horrible accident. This left her upset and because she was still nursing, Kyoko's breasts were in terrible pain. She worked as a nurse for young Touji until she was discovered by his mother. Years later, Marika finds her "breast brother" Touji who takes him to his mother ... without knowing her macabre plans.