The Gurongi from another world invade reality. An ordinary high school student transforms into Kamen Rider Zi-O and defeats the monsters.
A Rider without his mask is an ordinary person who cries, laughs, and feels fear. But when they put on their masks, they are invincible, because they know they must not fall, and will not fall, as they fight to protect the future of all humanity.
Li Yang transforms into Kuuga, Decade, Gaim, Ohma Zi-O, Tiga, and more, defeating attacks from other worlds and protecting the happiness of all humanity...
"Kamen Riders are humanity's guardians. We will always remember them."
"Kamen Riders, our gods."
"In that moment, I became light, too."
"Ultraman really does exist in this world."
