Has the world suddenly split into four? Keiwa Sakurai, Neon Kurama, Michinaga Azuma, and Tsumuri are flung into different worlds. And for some reason, a different Ace exists in each of the four worlds. The cause seems to be from the "World Doomsday Game" started by the staff from the future. In light of this crisis, the mysterious Cross Geats appears. Just what will happen to Ace and his friends?
Hideyoshi Kan
Ace Ukiyo / Kamen Rider Geats
Ryuga Sato
Keiwa Sakurai / Kamen Rider Tycoon
Yuna Hoshino
Neon Kuruma / Kamen Rider Na-Go
Kazuto Mokudai
Michinaga Azuma / Kamen Rider Buffa
Tsubasa Sakiyama
Win Hareruya / Kamen Rider PunkJack
Kokoro Aoshima
Tsumuri
Rina Onuki
Sae Ganaha / Kamen Rider Lopo
Hideki Kurauchi
Ittetsu Tanba / Kamen Rider Keilow
