In the year 2021 C.E., the world is wrapped in chaos and fear. The Kamen Rider OOO from 800 years ago has returned by crossing time. With humanity on the verge of extinction, the traveling Eiji Hino makes his return. Shintaro Goto, Akira Date, and Hina Izumi are part of a resistance group fighting back. Will a tomorrow come where they can meet Ankh again…?