The story is set in 1970 during the time of the first EXPO in Japan. The film’s main figure is a miner who suddenly becomes unemployed because the mine he worked in was shut down. He decides to resettle with his whole family to Hokkaido in northern Japan and start a new life as a farmer.
On a beautiful island in Seto Inner Sea, Seichi and Minko make their living by transporting rocks to construction sites by boat. They cherish the deepest affection for this piece of land they call home, and the simple life they lead. But rapid industrial growth makes it all but impossible to continue their chosen living style, and they are forced to leave their beloved hometown in search of a brighter future. But their hometown lingers on their hearts, and they dream of a time when they may once again return.
The quiet life of a mother and her young son living on a farm in Hokkaido is changed by the arrival of a man who ignites flames of romance in the heart of the mother and shows her boy the importance of grit and kindness, but then he leaves with the autumn wind.