The Americans are swiftly closing on Okinawa, an island just south of the Japanese mainland. The Imperial command sends top generals and several army divisions to defend it at all costs. The mission quickly degenerates as vital resources and troops are diverted to other islands. After a civilian evacuation ends in tragedy most of non-combatants are forced to remain on the island. Many convert to soldier status. Tokyo sends mixed messages that squander time and resources, as when they order the defenders to build an airstrip for aircraft that never come. The truth soon becomes obvious: the high command decides that the island cannot be held and effectively abandons the Okinawan defenders. When the Americans land many troops are deployed in the wrong places. As the slaughter mounts, a suicidal attitude takes hold. Okinawa becomes a death trap, for civilian volunteers and non-combatants as well.

A soldier has been in the Japanese military for the entirety of WWII, and in that time, his dedication to the army has never faltered. However, as the war draws to a close, his commanding officers become increasingly desperate and push their men to ever more absurd extremes. The ridiculousness of the orders from above peak when the hero of the story is assigned to drive a one-man submarine straight into the hull of an enemy battleship.