The special effects hero program "Kamen Rider Series" that children in the Showa era were enthusiastic about has been turned into a comic! "Kamen Rider Amazon", which was serialized in the popular magazine "Boken-oh", is now available in a long-awaited reprint! Ritsuko and Masahiko, who landed in Japan from the unexplored Amazon, are attacked by a giant snake. He tries to save him, but he gets caught in a spider beast man's thread and is swallowed whole by a giant snake. However, the young man transforms into Kamen Rider Amazon and rescues Ritsuko. Then, Dr. Kosaka finds out that the young people are the ones who protect Japan from the evil secret society Gedon, but they are attacked by Gedon's leader, Jumenki!