Teacher Kawashima Haru takes a position on a remote island off the coast of Hokkaido, where she takes charge of six students. However, she is later forced to leave after an accident occurs. 20 years later, Haru learns that one of her former students has committed a crime, and eventually returns to the island once more.

In 1868, after the fall of the Shogun-dominated Japan, the new government orders people from Awaji, near Kobe, to re-locate to the northern part of Hokkaido. These people once supported the now displaced Samurais of the older days. After two years, over 500 of them settled in their new land under the leadership of Hideaki, husband of Shino. However, as crops fail he is to go to Sapporo to learn new techniques of farming, leaving his wife and daughter for 5 years. All this time, the new community is constantly watched by the government which choose to again uproot them from their new homes.

The film follows the relationship between a mother and her son. In 1945, the mother played by Sayuri Yoshinaga fled with her two sons from the Russians to Hokkaido. In 1972, her son played by Masato Sakai returns to Japan after finding success in the U.S.