Shoutarou Hidari, a hard-boiled private investigator from the Narumi Detective Agency, lives for the sake of protecting the peace in the city of Fuuto alongside his inquisitive partner, Philip. One fine night, Shoutarou encounters a mysterious woman named Tokime, who is soon linked to several cases of homicide and theft. Shoutarou's investigation leads him to people using "Gaia Memories"—memory units similar to thumb drives holding vast amounts of data—to turn into formidable beasts called "Dopants." While the majority of Gaia users were put down by the detective team in the past, a number of them still remain, posing a great threat to public safety. Once more, Shoutarou and Philip, Gaia users on the side of justice, must fight as Kamen Rider W—the renowned hero safeguarding Fuuto—to eradicate the nest of villainous Dopants, all while uncovering Tokime's true identity and confronting the long-forgotten past.

Fifth season of .

In the distant future, human beings have been forced to leave earth and migrate to another galaxy. An advanced team of spacecraft arrives at a planet that is to be terraformed. Each member of the team is output by a biological 3D printer.

takes place during a sweltering midsummer day when Ozu, the protagonist's "terrible friend," accidentally drowns the only remote control for the air conditioning unit in their apartment. While they discuss their predicament with Akashi, the protagonist's raven-haired love interest, a sloppily-dressed time-travelling student arrives from 25 years in the future, prompting the protagonist to borrow his time machine in an effort to snatch the remote control from the past before it breaks.