Kamen Rider Double

Many people live in peace and harmony in Fuuto (風都, Fūto; the "Windy City"), an ecologically-minded and wind-powered city. However, this peace is undermined by the Sonozaki Family, who sell mysterious flash drive-like devices called Gaia Memories to criminals and other interested parties. These individuals use the Gaia Memories to become Dopants, committing crimes with the police force powerless to stop them. To make matters worse, the Gaia Memories can cause their users to go insane, to the point where they could die from using the devices unrestrained. After the death of his boss Sokichi Narumi, the self-proclaimed hard-boiled (actually half-boiled) detective Shotaro Hidari works with the mysterious Philip, who possesses a set of purified Gaia Memories, to investigate Dopant-related crimes in Fuuto. With their Gaia Memories and the Double Driver belts, Shotaro and Philip transform and combine into Kamen Rider W to fight the Dopant menace and keep Fuuto safe. While joined in their fight by investigator Ryu Terui, who transforms into Kamen Rider Accel, the mystery of Philip's past, his relation to the Sonozaki Family, and their Museum organization are revealed.