The great geologist Dr. Tomishima discovers that Japan's volcanoes are interconnected, and he pinpoints the core. Creating a blast there would cause all of Japan's volcanoes to explode at once. Bone Bambara steals Dr. Tomishima's map of the core of the volcanoes, and sets off an explosion there, but nothing happens. The doctor had prepared a fake map.

Toxic gas is generated at Mt. Onisumi and Dr. Katsuki and his investigators are attacked by Gas Bambara. Dr. Katsuki is safe because he took an antidote beforehand. Gas Bambara finds out that the formula for the antidote is hidden inside Dr. Katsuki's son Shingo's pendant. Gas Bambara goes after Shingo…

Rose Bambara attacks Dr. Ishikawa, who has been researching ways to end the food crisis. Inazuman fights off this creature, but soon runs out of energy. When he comes to, he notices a woman standing there. Her name is Watari Shinobu and she is Goro's mother, who supposedly died 15 years before. In reality, she is Rose Bambara's human form…

Goro discovers the entrance to the Neo-Human Empire that's deep underground, but he is unable to transform when Devil Bambara injures both his arms. When he manages to get in, he finds people who have been brought forcibly from the surface. So intent on avenging his mother, Goro is blind to their plight and he falls into Devil Bambara's trap…

Takashi is able to see the future. One night, just as he had foreseen, Takashi is attacked by Shadow Bambara, but is saved by Goro. In order to capture Takashi, to make him a member of the Neo-Human Empire, Shadow Bambara devours his mother's shadow. With Takashi's mother now on the brink of death, Inazuman fights Shadow Bambara…

One morning, newspaper delivery boy Kazuo finds a clay doll. As soon as he touches the doll, his hand goes numb and he collapses with a high fever. The clay doll is actually Clay Bambara, whose body is covered with horrible bacteria. Goro takes Kazuo to a hospital, but the only person who can cure him, Dr. Nonaka, has gone missing…

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