Mari Onada, Kikuchi Keitaro's nephews, Totaro, and Kaido Nao, also run the "Kikuchi Western Washing Shop" together with the Kusaya people who have returned without knowing when, and also provide shelter for Orino. Intelligent Brain, which was reorganized by the government, has been transformed into a company aimed at eliminating Ornoch, led by Kitasaki. One day, in order to save Orinno who was being hunted down, Caoka and Haitang transformed into Kamen Knight Caesar and Orinno the Snake, and fought against Huacan Lingcai, the captain of the team who destroyed Orinno. There appeared Qian Qiao, who had disappeared for several years and whose whereabouts were unknown. Qian Qiao transformed into a new form-the Kamen Rider Next Generation 555 (temporary translation). As the leading combat force of the Intelligent Brain Company's camp, he fought against Zhenli and others. Zhenli and others who were attacked were puzzled by this. Why did Qian Qiao appear in Intelligent Brain Company? What he has been doing since his disappearance... This dramatic reunion has opened a new chapter in the story of Orino and mankind...