Continuing where the previous story left, Mechazam proceeds to attack EX Zetton in a mad fury but almost perishes in the molten lava until Mebius saves him, despite being heavily injured by EX Zetton. Being thrown to the Battle Nizer, Mechazam tries to break the seal under Mebius' guidance to reverse the disruption field but the container was too strong...
A group of revived beast-themed Riders gather to form the "Beast Rider Squad"... and Kamen Rider Ouja, the worst villain Rider, is leading them! Can Kamen Rider Brave hunt them with his new Gashat, "Knight of Safari"?
The spirit of Kiba the Dark Makai Knight influenced everything since the beginning. Though he called himself a Makai Knight, Kiba was no different to a Horror.
The Crisis Empire devise a plan to defeat Kotaro Minami by reverting him back to his old form of Kamen Rider Black and sending out several revived monsters after him.
The Underground Empire Badan makes its move, intending to invert the world. Kouta and Mai are pulled through one of these inversions where the discover a boy named Shu, who also holds the power to invert the world.
Kouta and Kaito learn their Lockseeds rusted as they and Mai are visited by the mysterious girl who cryptically tells them the best way to restore the Lockseeds is to make them "fresh.
