Akiko Narumi arrives in Futo to be the landlord of the "hard-boiled" detective Shotaro Hidari, who finds himself involved in a case involving an old friend and a Dopant.

After his missing target is killed by another Dopant, Shotaro works with his partner Philip to figure out the truth regarding the killer while being dogged by Akiko and her strange sightings.

Shotaro is hired to save a girl from a legendary casino who offers ultimate riches for victory - and ultimate penalty for loss.

Tracking down the legendary casino, Shotaro must defeat its Dopant owner as Philip deals with a crisis hindering his mental abilities.

Shotaro is hired to protect from an assassin a councilwoman and her daughter, who believes Double is her father.

Shotaro debates the cost of keeping up Asuka's belief Double is her father as Museum steps up their motive in protecting their Gaia Memory factory.

Philip chases after a street dancer key to a locked memory, while Shotaro pursues a cockroach avenger taking out hired victims.

Shotaro tries to find the Cockroach Dopant's identity - in order to regain Double's missing Gaia Memories. Meanwhile, Philip tries to reunite the dance partners for their legendary move.

Akiko gets a job as a maid of the Sonozaki family in order to investigate a Dopant abducting pastry chefs.

Shotaro gets embroiled deeper in the Sonozakis connection to the Dopants as Akiko attempts to solve the criminal behind the patisserie abductions.

Shotaro decides to help an underworld gang after a member is killed by a Dopant-possessed car.

When the search for the Virus Dopant takes an unexpected turn, Shotaro and Philip must work to find the true controller and the reason behind their grudge.

Shotaro and Philip investigate a Dopant stalker causing chaos in order to impress Wakana.

As Shotaro continues to try and lure out Wakana's violent stalker, Philip continues to get unusually close to the radio-broadcasting Sonozaki.

A suspicious woman hires Shotaro to find a Dopant who is running amok while taking the name "Kamen Rider" as his own.

Discovering a horrible secret from Saeko and seeing his partners captured by Arms Dopant, Philip must figure a way to save them even if using the unstable Fang Memory.

When Shotaro is hired to find the daughter of his barber, he discovers horrible new developments regarding the Gaia Memories.

As Shotaro and Philip discover the truth regarding the teens using the Bird Memory, Kirihiko discovers the truth behind the Museum organisation.

The new leader of Fuuto Police's Dopant investigation division uses Shotaro to track down a Dopant attacking victims with ice.

As Ryu's intensity threatens to harm innocents, Shotaro and Philip must discover the reason behind his anger while putting a stop to the ice-powered Dopant.

Makura involves Shotaro in a case in rooting out a traitor within the Fuuto police leaking out information on the Gaia Memories.

Aya tries to gain Shotaro and Ryu's trust in using her Dopant power to be an asset, hiding her true intentions and desires of her situation.

A request from Queen and Elizabeth leads to an investigation of a terrible street performer mysteriously winning a popular singing competition.

While trying to figure a means to defeat the tricky Liar Dopant, Shotaro confronts Jimmy about his confidence and trust in his only fan.

Akiko is asked by a little girl to find her lost doll, which has been terrorizing targets throughout Fuuto.