Twenty-two years after the disappearance of his father, Wataru Kurenai lives in an infamous 'haunted house' where he is destined as Kamen Rider Kiva to fight life-draining monsters called Fangires, the very race his father fought years ago before his disappearance. Goodbye to the E/A Bouquet of Justice in This City.The J Labyrinth/The Psychotic Villainess.The Likelihood of the G/You Are Unforgivable.The Likelihood of the G/Bad Cinema Paradise.Beyond the R/A Monstrous Rain Approaches.Y's Tragedy/The Woman Looking For Yesterday.The B Carried on the Wind/Now, in the Radiance.The B Carried on the Wind/The Beast Pursues.The Nightmarish H/The Melancholy of the Sleeping Princess.

The D was Seen/The Transparent Magical Lady.

The T Returns/A Melody Not Intended for Women.

The I Doesn't Stop/That Guy's Name is Accel.

The S Terror/The Great Detective's Daughter.

The S Terror/Look at the Maid Detective!.

The W Search/Those Who Make the City Grieve.

While joined in their fight by investigator Ryu Terui, who transforms into Kamen Rider Accel, the mystery of Philip's past and his relation to the Sonozaki Family and their Museum organization are revealed. Using their own Gaia Memories, Shotaro and Philip use the Double Driver belts to transform and combine into Kamen Rider Double to fight the Dopant menace and keep Futo safe. After the death of his boss, the self-proclaimed hardboiled (actually half-boiled) detective Shotaro Hidari works with the mysterious Philip, who possesses the true Gaia Memory, to investigate crimes which involve Dopants.

To make matters worse, the Gaia Memories carry a dangerous toxin that cause their users to go insane to the point where they could die from the life-threatening devices. However, the Sonozaki Family sell mysterious devices resembling USB flash drives called Gaia Memories to criminals and other interested parties who use them to become monsters called Dopants, committing crimes with the police force powerless to stop them. In the ecologically-minded city of Futo (風都, Fūto?, the 'Windy City'), there are many windmills and the people live in harmony.

Kamen rider ooo episode 9