Akira Fudo learns from his best friend Ryo Asuka that demons will revive and reclaim the world from humans. With humans hopeless against this threat, Ryo suggests combining with a demon. With this, Akira becomes Devilman, a being with the power of demon but with a human heart.

First Lieutenant Shun'ichi Maki of the Japan Air Self-Defense Force is a prestigious F-15 Eagle jet pilot (or "driver" as he is called in the film). A lifelong fan of flying since he was a child, being a pilot is his ultimate dream. Unfortunately, his duties distance himself from his wife, Yoko, who always ends up being neglected, and his son, Tsugumu, who has a congenital blood disease and has a high risk of dying at a young age.Maki decides to quit the Air Force to devote more time to his family and to spend whatever is left for his son. He takes a part-time job as a commercial tour guide run by a kindly group of people who allow him time to work and to also take care of his family.

Once upon a time, there were two neighboring countries that did not get along. They bickered over trivial things day in and day out. Finally, they went to war over the issue of cleaning up dog feces. God intervened in a hurry and said to the chiefs of the two countries. Country A gives its most beautiful girl to Country B as a bride and Country B gives its wisest young man to Country A as a bridegroom. Then, the princess of country A, Saara, happens to meet a young man from country B...!

When a young soldier is killed while trying to prevent his younger sister, Kaoru, from being sold into a life of prostitution, his commander, Col. Miyagi, tries to honor his dying wish to rescue his sister. Upon finding Kaoru at a party working as a geisha and later rescuing her from committing suicide, Col. Miyagi allows her to move in with him. Over time, the two grow close, but in spite of Kaoru's growing feelings for him, Col. Miyagi is unable to bring himself to return her love. On the night of his deployment to war, Col. Miyagi finally admits his feelings for Kaoru, but will they ever be able to enjoy a peaceful life together now that a very violent and bloody military revolt is under way...

The film tells the story of a man who was washed ashore on an uninhabited island after a ship wrecked by a storm, and after twelve years, he returned to human society.