I want to protect everything; I want to kill everything. Are you prepared to live as a true Kamen Rider?

The “Amazon Livestock Project,” a mysterious care facility, the Amazon extermination organization 4C (Competitive Creatures Control Center) pursuing Haruka Misuzawa . . . all come together in a tale of symbiosis and competition; the mortal combat between the carnivore and herbivore. And, finally, an end to the troubles and conflicts of the Riders, two beings confronting a fierce fate.