The universe is not just one. Within the overlapping layers of the multiverse, there exists another Earth that looks exactly like Earth. In "MultiEarth ?0073", which has entered an era of cosmic coexistence, crimes involving the exploitation of energy-based lifeforms known as "Emorgy" are breaking out one after another. Reiji Doki, an investigator for the Galaxy Federal Police, is Gavan Infinity, the only person in the universe permitted to claim the title of "Space Sheriff Gavan". However, he is stationed in the backwater Archives Department. His true objective is to investigate Emorgy crimes across dimensions. Chasing these inter-dimensional threats, Reiji leaps through space-time, encountering the Gavans of various dimensions and joining forces to bring justice to the multiverse. "Jo-Chaku!" The Space Sheriffs Gavan transcend the boundaries of the universe to strike down evil!
Both are seasons of a Toei tokusatsu franchise: Zenkaiger for Super Sentai and Decade for Kamen Rider. They have a heavy focus on being the anniversary of the franchise. Both seasons have a focus on the franchise being part of the bigger multiverse. These multiverse worlds correspond with a previous season of their franchise. They also have a gimmick that has the power of those seasons stored in them.
The "rampage" of those with power, and the "resolve" of those without. The ultimate drama and psychic action is born here, where human evolution and conviction collide. A world where people began awakening to "psychic powers" one after another. Those who wielded their powers recklessly emerged, plunging the city into chaos. Amidst this turmoil, one police officer stood against them—Hikawa Makoto. He possesses no special powers, but he is an honest, clumsy man who believes in justice more straightforwardly than anyone.
Ten thousand years ago, a massive battle known as the Battle Royal was fought by fifty-two Undead, each representing a species fighting for dominance over all others. The winner was the Human Undead, known as Category Two of Hearts, giving dominion of the Earth to humanity. In the present day, archaeologists discover the sealed Undead and accidentally set them free. Thus, a new Battle Royal begins.
Having developed the Rider System, based on the Joker's ability to copy sealed Undead, the organization BOARD (Board Of Archaeological Research Department) equips two young men, who become Kamen Riders: Kazuma Kenzaki and Sakuya Tachibana fight together as Kamen Rider Blade and Kamen Rider Garren to protect humans from Undead and seal them. Also fighting Undead is the mysterious Chalice, a Kamen Rider whose purpose is unknown. In addition, a young man struggles to free himself from the control of the sealed Undead powering his own Undead-made Rider System, fighting as Kamen Rider Leangle.
Having developed the Rider System, based on the Joker's ability to copy sealed Undead, the organization BOARD (Board Of Archaeological Research Department) equips two young men, who become Kamen Riders: Kazuma Kenzaki and Sakuya Tachibana fight together as Kamen Rider Blade and Kamen Rider Garren to protect humans from Undead and seal them. Also fighting Undead is the mysterious Chalice, a Kamen Rider whose purpose is unknown. In addition, a young man struggles to free himself from the control of the sealed Undead powering his own Undead-made Rider System, fighting as Kamen Rider Leangle.
"Tradition. History. Pride. Struggle. Reflection. Courage. Beyond that, there is innovation. Don't lose your dream. Wake up." In a world shaped by the dreams we see in our sleep, ZEZTZ enters people’s dreams as an agent on a mission. Equipped with a cutting-edge Rider belt worn across the chest, ZEZTZ brings a bold new form to the battle.
