Step into the city of harmony between nature and civilization, 'Rainbow City,' where the protagonist discovers the existence of 'Masked Riders' whose true memories are lost due to 'Chaosism' body modifications. Taking on the role of 'Agent' to support Masked Riders, inherited from the protagonist's late father, embark on a journey to change the 'fate' set for them and recover their memories alongside 16 diverse Masked Riders.

Experience a completely original story crafted by scriptwriter Takahashi Yuya of 'Kamen Rider Geitz,' spanning 14 chapters filled with full voice acting and Live2D full-motion animation for immersive storytelling. Unveil various character and card episodes while playing, delving deep into the personalities and relationships of the 16 Masked Riders. Engage in investigations to unearth the mysterious 'Chaos Stones' that unlock the power of the Masked Riders, leading to battles where each Rider's unique skills shine.