In the sixteenth Heisei era Kamen Rider series, which is also the twenty-fifth installment of Kamen Rider franchise, Shinnosuke Tomari, a young detective in Special Investigation Unit of the Metropolitan Police Department fights against the Roidmudes, a race of robots fighting humanity for supremacy lead by Heart and Brain. With the help of his partner/scientist mentor/Transformation belt Krim Steinbelt, Shinnosuke becomes Kamen Rider Drive, A man made hero with the powers of automobiles.
College student Takeshi Hongo is abducted into terrorist organisation Shocker (Sacred Hegemony Of Cycle Kindred Evolutional Realm), at the hands of a cyborg Inhumanoid known as the Bat. There, he undergoes painful reconstructive surgery, turning him into an Inhumanoid himself. Unlike the original series, he does not escape prior to mental condition by Shocker, and becomes one of their soldiers, nicknamed "Hopper". He carries out a mission successfully, and meets Shocker's Major Agents, including Dr. Shinigami. Hongo receives his orders— Kill those who have seen Shocker's Inhumanoid soldiers. However, what he doesn't realise is that the two witnesses are the journalist who had interviewed him prior to his kidnapping, Asuka Midorikawa and her fiancé Katsuhiko Yano. Attacking the two along with Shocker soldier Spider, it is here that Hongo remembers his humanity, and has an epiphany with regards to what he should do.
The events pick up two years after the last film. Takeshi Hongo is now a high-school teacher and Hayato Ichimonji is just counting down the days before his cybernetic implants kill him. Our heroes are thrust into action when a bizarre series of murders occur; the calling card being the single "Platinum Smile" playing in the background. A further investigation by our heroes discovers that not only is its singer, Chiharu Kazami, dead, but the single itself is part of Shocker's latest nefarious scheme. The Double Riders soon find themselves battling a band of evil twins, led by two new Shocker Kaijin and Kamen Rider V3, who is none other than Chiharu's brother Shiro Kazami.
