In the fictional Nagashima prefecture, Yoichi Ono lives a peaceful life with his wife Izumi, and his parents Yasuhiko and Chieko, on the family’s small farm. One day, an earthquake disrupts the calm, causing the reactor at a nearby nuclear power plant to explode. The Nagashima community is directly within the twenty-kilometre evacuation radius—except for the Ono farm. Haunted by memories of the Fukushima nuclear disaster, in which evacuees were forced out of their homes permanently, the Onos are faced with a terrible decision: stay and risk the possibility of radiation poisoning, or leave the home their family has spent generations building.