"Takeki koto, shishi no gotoku. Tsuyoki koto, mata shishi no gotoku. Sekai wo seisuru mono, waga na wa Kurojishi… Rio
Four thousand years ago, in China, a form of Kenpo martial arts was developed, the Beast-Fist style in which one that practices this fighting style could mimic the abilities of animals as well as reach spiritual peace. By present time, two opposing schools of the Beast-Fist martial arts were established: One is the Fierce Beast-Fist Beast Arts, the Beast Fist of Justice whose sport discipline enhances the human body with the self-produced positive Qi2 called "Fierce Qi". It is taught by Grand Master Sha-Fu, one of the seven Fist Sages, using a sports goods company named "SCRTC" as a front. The evil form of the Beast-Fist style is known as Confrontation Beast-Fist Akugata created by the Three Fist Demons that had long been dead since the GekiRin Rebellion that marked the start of the two schools' long war. One master of the Confrontation Beast Fist-style, Rio, rebuilds the Confrontation Beast Hall with intent on world domination with his army of kyonshi martial artists brought back from the dead to gather large amounts of "Confrontation Qi", Fierce Qi's polar opposite Qi. To fight the Confrontation Beast Hall, Sha-Fu had been training two youths: Ran Uzaki, and Retsu Fukami. Along with the wild boy raised in the forest, Jan Kandou, the Gekiranger team is formed. Taking over for the Fist Sages and Fist Demons, the Gekirangers and Rio, along with his follower Mele, confront each other while striving to be the stronger force with every battle.
