In the spring of 1983 (Showa 58), Tanokura Shin, the elderly founder of a supermarket chain in Mie Prefecture, mysteriously disappeared on the day of her 17th store's grand opening. Her adopted grandson, Kei Yashiro, set off to find her, following clues from memories shared by Oshin. He tracked her to Ginzan Onsen in Yamagata Prefecture, where she refused to return home. Instead, she insisted on visiting a deserted mountain village. Kei
