Jumbo Revived!.In a corner of Marine Park, there is a robot named Jumbo, who seems to have fallen apart and been completely forgotten by the people. There is a girl who has spent her whole life gazing at Jumbo. It's Midori, Atom's homeroom teacher. One day, Jumbo is remodeled by a gang of villains and starts working again. The goal is to break Skunk out of his prison cell. The prison where Skunk was held has a device called the Guardian Pulse to prevent escape using machines, but the old robot Jumbo is unaffected by this. Atom and the police try to stop Jumbo from rampaging through the prison to get Skunk out, but the Guardian Pulse prevents them from doing so. Midori and Atom try their best to talk to Jumbo and remind him of his old kind heart, while also trying to stop Skunk from escaping.