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.

As her husband Eiichi becomes more entangled in his life as businessman, Naoko looks for ways to expand her own life even as her husband's life shrinks in scope and intimacy. She finds new interests, new love, and a greater sense of her place in the world.