In this special, Houtaro and Rinne swapped bodies! In order to return to their original bodies, they need to a complete mission given to them by Firemars and Inphoenix! To help them, both Professor Minato and Supana are acting differently?! The special will also feature the debut of Kamen Rider Gotchard MarsPhoenix!
本島純政
as Houtaro Ichinose/Kamen Rider Gotchard
松本麗世
as Rinne Kudo/Kamen Rider Majade
藤林泰也
as Supana Kurogane
熊木陸斗
as Minato
高橋李依
as X Wizard, Inphoenix (voice)
福圓美里
as Hopper1 (voice)
加部亜門
as Firemars (voice)
