A samurai answers a village's request for protection after he falls on hard times. The town needs protection from bandits, so the samurai gathers six others to help him teach the people how to defend themselves, and the villagers provide the soldiers with food.

The story centers on an elderly hibakusha, whose husband was one of 80,000 human beings killed in the 1945 atomic bombing of Nagasaki, caring for her four grandchildren over the summer. She learns of a long-lost brother, Suzujiro, living in Hawaii who wants her to visit him before he dies.