Dr. Ochanomizu is in town and watches the circus, where Tobio catches his eye. Suffering from bad maintenance, Tornado misses his circus act and is destroyed. Losing the owner’s confidence, Hamegg is in danger of losing the circus. Confident in Tobio’s abilities, Kathy convinces Hamegg that she can teach him Tornado’s dangerous act, which involves him jumping through two spinning rings filled with electricity, which would save the circus. Tobio trains while the circus moves to another city, leaving Ochanomizu, who has finally recognized him as Dr. Tenma’s missing robot. Ochanomizu finds him right as Tobio is about to perform the trapeze act. Tobio makes it, and then saves the crowd from the elephant robots that have become mad after Hamegg overpowered them.