Sento's father, Shinobu Katsuragi, suddenly appears before the Riders! Shinobu continues to reveal things that surprise all of them. Despite the fact that the Build his father created appears to be their enemy, Sento still tries to believe in Shinobu. Tension from within the team starts to form surrounding this particular issue. Just then, Misora is kidnapped by Evolto disguised as Soichi…!
