In the not-too-distant future, the Earth finds itself constantly under attack from extraterrestrial threats. The Terrestrial Defense Force establishes the Ultra Garrison, a team of six elite members who utilize high-tech vehicles and weaponry. Joining their fight is the mysterious Dan Moroboshi, secretly an alien from the Land of Light in Nebula M-78, who transforms into his true form in times of crisis, Ultraseven.

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.

In the Edo period, a nameless ronin accepts an assignment to go to a mountain pass and wait. Near the pass he stops at an inn where a collection of characters gather, including a gang set on stealing shogunate gold that's soon to come over the pass. When the Ronin's assignment becomes clear, to help the gang, he's ordered to kill the inn's residents, including a woman he's rescued from an abusive husband. He's reluctant to murder innocent people; then he learns that the gold shipment is a trap and he's part of a double cross. How he sorts through these divided loyalties tests of his samurai honor, and perhaps of his love for a woman.

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.

Direct-to-video documentary special about the 1967 series Ultraseven, mainly focusing on the series' heroine, Anne Yuri, and her actress Yuriko Hishimi, as she and staff and cast members share behind-the-scenes stories from the series.