Geats, Revice, and Ryuki wage a fierce battle royale that transcends beyond the Heisei and Reiwa eras.

Childhood friends find a creature with mysterious powers that pushes them to discover the bonds that tie the three students together.

When the evil Orteca convinces an office worker to contract with and unleash the Spider Deadman, Ikki Igarashi transforms into Kamen Rider Revi to stop them! At his side is…

Ikki, Touma, and their allies fight against a Devil with ties to Shocker while attempting to help a Kamen Rider from the future reconcile with his now elderly son.