Shuichi Tsujiyama (Takumi Saito) is a broke private investigator. While on a job assignment, he is about to catch a crucial moment by taking a picture, but Naomi Arai (Fumi Nikaido) misunderstands the situation. Shuichi Tsujiyama and Naomi Arai struggle physically. Because of this, Shuichi Tsujiyama misses his crucial photo opportunity.  Kimie Hasenuma (Mari Natsuki) is a housekeeper who has been employed by Naomi Arai for many years. Kimie Hasenuma asks Shuichi Tsujiyama to be Naomi Arai’s bodyguard.

Detective Story

After dying in an accident, a manga artist with a gambling problem is given one month back with his family to redeem himself — in the body of a cat.

Tiger: My Life as a Cat

ZAIA Enterprise CEO Leon Arkland has abducted Jin away from Metsuboujinrai.net. A large number of soldier-model Huma Gears "Sold" were seen by Naki and Ikazuchi while rescuing Jin. The intention of Leon Arkland was to mass-produce "Sold" and sell them as weapons all over the world. Jin is indignant at the fact that Humagears are about to be used as a weapon, and tells the other members of Metsuboujinrai.net that he wants to free the "Solds".  Four people who transform into Kamen Riders will fight to release the "Solds". However, something unexpected happened... What happened to Jin, while he was captured by Leon? According to Leon's plan, the being that poses the "greatest threat" to humankind is about to be born in a surprising way...

Zero-One Others: Kamen Rider Metsuboujinrai

The Solds attempt to discover freedom for the first time without ZAIA Enterprise, while engaging in a war against A.I.M.S. Isamu Fuwa investigates to discover their true goal and Yua Yaiba is determined to carry out his final mission.