On March 11, 2011, Okawa Elementary School in Ishinomaki City was engulfed by a tsunami, and 74 children, or 70% of the school's children, were killed. 51 minutes elapsed between the earthquake and when the tsunami reached the school. The school was informed of the tsunami and a school bus was on standby, but students did not evacuate. Okawa Elementary was the only school that suffered a large number of casualties in this earthquake. This documentary follows the lawsuit that followed the disaster, where the parents sought the truth behind the tragedy.

The movie is currently not available onine