A car going at 25 mph plunges into the sea at Shinko Harbour, Toyama prefecture. Inside is the local business magnate Fukutaro Shirakawa, who perishes. Riding alongside him and surviving…

Earth is attacked by alien spacecraft from Venus. But a Japanese scientist has constructed a space craft, the Gohten, with which he may save humanity.

This is a film about a real person. Sanada Yukimura fought a war against Tokugawa Ieyasu.