After the fall of Museum-the evil organization responsible for many crimes in Futo, the production and distribution of Gaia Memories has halted. However, remnants of Gaia Memories still remain within society and are sold on the black market at high prices. Thus, the two heroes from Narumi Detective Office are yet to have time to relax. Sights of Dopants still occur and the agency receives more and more clients who claim to experience supernatural phenomena. Regardless of the arduous nature of the task, Kamen Rider Double promises that those who hurt Futo will inevitably count up their sins.
When a popular video game company's idol-spokeswoman/head developer starts receiving death threats, the Narumi Detective Agency is brought in to protect her.
Despite Shotaro's condition, still in the rest room, Philip transforms into Kamen Rider to confront his enemy. His way of fighting is different, but the objective remains the same: to protect Monako, alias Meg.
W and Accel are forced out of Shadow Fuuto by the nuclear-powered Nikaido and his army of monstrous Road Dopants. Will they find their way back in time to rescue Tokime and Rentaro?
Shotaro is injured defending the video game idol, Megu Kazamatsuri, leaving Philip in charge of the investigation. But can he and Tokime put aside their differences to protect their client?
The hunt for Tokime continues, but Shotaro begins to have growing doubts about her guilt, which leads to friction with his partner, Philip.
A young girl contacts the Narumi Detective Agency about her missing grandfather. But what does her case have to do with Shadow Fuuto?
After a flight of fancy leaves Shotaro and Philip stranded in the mountains during a blizzard, they stumble onto a mansion that hosts a bizarre ritual.
The identity of the Road Dopant has been made clear, and Kamen Rider W is here to save the day. But questions still remain. Who is Tokime, and what happened to her memories?
In the windy city of Fuuto, private detective Shotaro Hidari works with his friends to protect the citizens... in more ways than one. But a chance encounter with a bewitching femme fatale might spell a whole new kind of trouble for him, and his city.
A confrontation erupts when the Alcohol Dopant's true identity is revealed, while Kamen Rider Accel battles the gruesome Scream.
Shotaro and Philip struggle to discover the truth behind the Alcohol Dopant's attacks before there's another death.