High definition master In Shinshu, a small mountain village in central Japan, a silk spinner is raising her son Ryosuke on her own. A good student, he is old enough to go to high school but the mother is against it because studies are too expensive. She ended up accepting, however, choosing to sacrifice everything for her son's education. Thirteen years later, Ryosuke moved to Tokyo and his mother visited him for the first time. Despite her son's efforts to welcome her, she discovers that he lives in a precarious situation, disappointed by the promises of the big city ...