Episode 46
Himika, the queen of the Great Kingdom, who had been sleeping for a long time, was revived. Dr. Shiba, who was expecting it, created Steel Jeeg. Hiroshi, which was turned into a cyborg by Dr. Shiba, transforms into Steel Jeeg and defeats Himika by joining forces with his partners Uzuki, Build Base, and Mechadon. Hiroshi will risk everything when an even more ferious enemy appear, the Dragon Demon Emperor.
Aired 29/08/1976EP 46 - Episode 46

Koutetsu Jeeg
Hiroshi Shiba is an outstanding car racer whose father is assassinated upon the discovery of the Bronze Bell from an ancient civilization. This Bronze Bell is coveted by Queen Himika who comes from that ancient era; the Yamatai Kingdom, and whose ambitions are to seize the Bell and dominate earth.
Hiroshi is left with a few items from his father which would enable him to morph into a full sized mecha warrior, the Steel Jeeg. With these abilities and the help of his father's brain implanted in a computer and his assistance Miwa "Micchi" Uzuki, they set out to neutralize Himika's plans of world dominion.