Under the impression that they saved the World of Den-O, Tsukasa Kadoya (Kamen Rider Decade) and company begin their journey to the World of Kabuto when they are halted by Sieg who presents them a manuscript that detailed the legendary Oni Conquest with Momotaros' image on it. As this occurred, the Tarōs mysteriously vanish from the DenLiner as they are about to help Kotaro Nogami (Kamen Rider New Den‑O) out with the true threat to their world.
桜田通
as Kotaro Nogami / Kamen Rider New Den-O
井上正大
as Tsukasa Kadoya / Kamen Rider Decade
溝口琢矢
as Ryotaro Nogami / Kamen Rider Den-O
戸谷公人
as Daiki Kaitou / Kamen Rider DiEnd
松元環季
as Kohana
秋山莉奈
as Naomi
石丸謙二郎
as Owner / Station Master
森カンナ
as Natsumi Hikari
石橋蓮司
as Eijirou Hikari
南明奈
as Toki
Ruka Sawaki
as Yuu
中村優一
as Yuuto Sakurai
