As Akira Fudo wakes up, he finds himself in a "chibi" form, which he thinks doesn't fit a hero such as himself. He is not the only one that has changed. Together with Ryo and Miki, they set out on a journey to restore their proper appearances and find out what caused this change. During their adventure they find several other characters from the world of Go Nagai, such as Mazinger Z, Dr. Hell, Baron Ashura, and others.

In this episode, Akira Fudo (aka Devil Man) fights more demons trying to kill him. The strongest enemy sent from demon's world is Silen, the demon bird.

Akira is just another normal kid in modern-day Tokyo, until an old friend of his, Ryo, shows up and turns his world upside down. Akira learns that there is an upcoming war of demons on humanity and he has just been enlisted for a major tour of duty. But the only way to fight a demon is with their power, so Akira and Ryo risk a dangerous ceremony in an attempt to create humanity's only hope: the powerful Devilman.

Akira is just another normal kid in modern-day Tokyo, until an old friend of his, Ryo, shows up and turns his world upside down. Akira learns that there is an upcoming war of demons on humanity and he has just been enlisted for a major tour of duty. But the only way to fight a demon is with their power, so Akira and Ryo risk a dangerous ceremony in an attempt to create humanity's only hope: the powerful Devilman.