While playing with Shinnosuke "Shin" Nohara, Shin's father Hiroshi sprains his back. Desperate for treatment, Hiroshi accepts an invitation to a spa, which ends up transforming him into a robot. Despite initially disbelieving his identity, Hiroshi's wife, Misae eventually warms up to him while hiring private investigator Dandanbara Teruyo to track down the spa; Misae finally becomes convinced when Hiroshi rescues Shin and his friends during a field trip. Omega Ranran, who had earlier invited Hiroshi to the spa, gives Shin a mustache add-on for Hiroshi; when plugged in, Hiroshi (who was accustomed to suffering domestic
violence committed upon him by his wife) suddenly turns furiously misogynistic and starts an antifeminist campaign consisting of fathers having similar grievances. Shinchan and his friends manage to remove the mustache, though Hiroshi is captured by Tekkenji Doukatsu, Ranran's leader. Shin follows him to his factory, where he discovers Hiroshi in his human form; Hiroshi realizes that his robot version is simply a clone that has his memories. Shinchan and both versions of Hiroshi successfully stop the campaign, during which Hiroshi's robot defeats Tekkenji. While both Hiroshis debate their real identity, the Noharas and Dandanbara are captured by Tekkenji, who is revealed to be a robot controlled by police chief Kuroiwa. Kuroiwa attributes his misogynistic attitude to years of abuse &
neglect he endured from his own wife & daughter. Kuroiwa attempts to
forcefeed Shinchan green bell-peppers (which he intensely dislikes) with Hiroshi's robot, though Shinchan manages to make Hiroshi's robot undo Kuroiwa's control. A battle ensues, extending from Kuroiwa's later-destroyed base to the construction site from Shinchan's earlier field trip, culminating in Shinchan and both Hiroshis teaming up to defeat Kuroiwa. After the battle, Dandanbara arrests Kuroiwa and Ganma for Offences they committed. After the human Hiroshi wins an arm wrestling match with his robot version, the latter succumbs to his wounds. ==Cast==