A plane with Dr. Elephant and Astro on board is caught in a magnetic storm, but Astro saves the plane from crashing. Atlas, who has remodeled himself into the form of a young man, rescues Skunk, who is wanted by the police but they separate. Atlas snatches Astro’s parents, who were made by Dr. Elephant. Astro tracks someone who resonates with him and finds Atlas causing a magnetic storm. Astro refuses to cooperate with him to take over the world and destroys Atlas’ base and relieves his parents.

A swan flies into Astro’s home and turns into Princess Odette. But Devil King, who has chased after her, takes her back. Dr. Elephant and Astro visit an island called Robot Land, made by Dr. Hyde who is Dr. Elephant’s former colleague at the Ministry of Science. Dr. Elephant resents the robot abuse that occurs there. The next day Astro sneaks onto the island but is caught. His classmates reveal that Dr. Hyde is secretly producing weapons and the robots revolt. Astro defeats Devil King.

Frankenstein, an uncompleted robot for space exploration, goes out of control after being struck by lightning in the Precision Machinery Division at the Ministry of Science. Frankenstein is taken over by Skunk, the first human he has encountered, and starts stealing money and valuables on Skunk’s order. A trend in distrust of robots spreads and robots in the town are deactivated one after another. Astro is mistaken for Frankenstein’s accomplice but repairs Frankenstein who, once again, has gone out of control after being struck by lightning, and captures Skunk’s followers.