Devilman, one of the soldiers in the Demon clan, is ordered by the greatest demon to spread chaos in the earth. He successfully haunts the body of Akira, an orphan, and goes in his way to attend to his duties. In the mean time, the Demon clan discovers that he has betrayed them. The reason was love. Demon after demon was sent to defy Devilman. All have lost, However, and from here continues the story.