This movie is an alternate ending to the series, taking place after the events of episode 46. With only six Riders remaining in the Rider War, Shirō Kanzaki feels that time is running short.

"Mirror World" exists symmetrically beyond an invisible mirror in space, and an exact copy of our human world, where only monsters can dwell. Evil monsters frequently cross the mirror and attack our world. Only Kamen Riders who make a contract with a specific monster and obtain special power from it, can enter "Mirror World" and fight against evil monsters with the help of an "Advent Card."

Shinji Kido, a journalist, contracts with a dragon and becomes Kamen Rider Ryuki. He fights a fierce battle with evil monsters. Many Kamen Riders appear one after another and fight to satisfy their own aims. However, only one Kamen Rider can outlive others. Thus, it is their fate to keep fighting to the last man.

This television special is an alternate telling of the Kamen Rider Ryuki story. Shinji Kido's life, working as an employee at ORE Journal, takes a sharp turn after being pulled into the Mirror World by a Mispider. Luckily, he was saved by Kamen Rider Ryuki, Koichi Sakakibara. However, Sakakibara could no longer go on due to the severity of his injuries and passed his Card Deck to Shinji, allowing him to become the next Ryuki and defeat the monster.

Hotshot Nagase Saichi is Tosaka Real Estate’s top realtor. He lies through his teeth and will stop at nothing to seal a deal. One day, he disturbs a monument located at a construction site. Cursed with the inability to tell a lie, he is forced to run his mouth off with things that are better left unsaid. With so many angry clients, he's got no hope of surviving as an honest realtor.

嘘のつけない不動産営業マン・永瀬財地役で山下が主演。シーズン2では、永瀬を“ライアー”に導いたかつての上司である最強の不動産営業マンがミネルヴァ不動産に入社し、永瀬が所属する登坂不動産に牙をむく。

MPD Psycho (full title: Multiple Personality Detective Psycho – Kazuhiko Amamiya Returns) is a six-part Japanese surrealist horror miniseries directed by Takashi Miike, based on Eiji Ōtsuka's manga series of the same name.

Homicide detective Yosuke Kobayashi saw his wife killed by serial killer Shinji Nishizono. From the shock of the incident, he suffers from multiple personality disorder and becomes Kazuhiko Amamiya. Soon after, he goes on the hunt for revenge.