Young women at a precision optics factory in wartime Japan push to exceed production quotas, enduring illness, injury, and personal hardship to “serve the country.” Led by Tsuru Watanabe, they fight fatigue and setbacks to keep their line moving—even when duty collides with grief.

A sixteen-year-old who had been living on her own since her mother died, frequently gets in trouble with the police. She gets sent to an "institute" for young girls in the countryside. There the residents grow their own food, cook and clean for themselves, and are taught language, music, and sewing. While there the young girl slowly begins to form friendships and come out of her shell.