The Bugster Virus, formed from video games, threatens humanity and seeks to turn Bugsters into complete beings. A hospital intern, Emu Hojo, and three other Kamen Riders (Brave, Snipe, and Lazer) must defeat the virus and save humanity.
Emu Hojo / Kamen Rider Ex-Aid
Hiiro Kagami / Kamen Rider Brave
Taiga Hanaya / Kamen Rider Snipe
Kuroto Dan / Kamen Rider Genm
Asuna Karino / Poppy Pipopapo
Kiriya Kujo / Kamen Rider Lazer
Parad / Kamen Rider Para-DX
Graphite
Nico Saiba
Masamune Dan / Kamen Rider Cronus
Haima Kagami
Kyotaro Hinata
Gamer Driver / Rider Gashat / Gashacon Weapon (voice)
Narration (voice), Gashacon Bugvisor II / Buggle Driver II / Kamen Rider Chronicle Gashat (voice)
