Kamen Rider Sentinel

Story
Fifty thousand years ago, ancient human civilization fought against the army of darkness known as Grimons. Assisted by the mystical power of Guardian Beasts, they succeeded in defeating Grimons and their King, Apocalypse was entombed alive. Awakening in 2020, he believes humanity has lost its way. Aiming to destroy the world and remake it in the image he sees fit. He resurrects the Grimons and began his conquest to build a new world filled with darkness. Having developed the Rider System, based on the power of Guardian Beasts, the organization Deus was ordered to counter this new threat.