Season 1

News reporter Shinji Kido is drawn into a case involving a series of abductions involving reflections when he suddenly found a mysterious deck left by the individual in the victim's apartment. As Shinji tries to figuring out the cause of this mystery, a mysterious woman and a man with a black coat pursues Shinji, asking if he was a Kamen Rider.

Having become a Kamen Rider himself, Shinji tries to discover more from another Rider and his female partner as the mysterious dragon continues to pursue him while his female partner talking about her brother's existence. Having witnessed the battle he participates, Shinji decided to participate in the war as Kamen Rider Ryuki.