Komoro, Japan, 1956. 10-year-old Sumiko chases a red dragonfly through her family’s farm while her mother, Yoshiko, watches from a distance. Tokyo, 1945. Yoshiko, her husband, Susumu, and their baby boy, Kiyoshi, are forced to evacuate their home when hundreds of B-29 bombers drop incendiary bombs on the city, erupting into a massive fire.