Juken Sentai Gekiranger

Four thousand years ago, in China, a form of Kenpo martial arts was developed by ten humans and would become known as the Beast-Fist style. Beast-Fist is a martial art in which one mimics the abilities of animals as well as means of reaching spiritual peace. However, dissent grew among its creators. Three believed that they should use the suffering and hatred harnessed within humans to increase their power, uses their power to assume their monstrous forms, the Three Fist Demons. The other seven believed that the strength should come from within and were forced to fight their former friends, ending the fight with a forbidden technique to seal the Fist Demons' powers at the cost of losing their own human forms in the process, becoming the Fist Sages. Followers of the Fist Sages created the Fierce Beast-Fist Beast Arts school: the Beast-Fist of justice whose sport discipline enhances the human body with the self-produced positive Qi called Fierce Ki. It is taught by Grand Master Sha-Fu, one of the seven Fist Sages, using a sporting goods company named "SCRTC" as a front. The followers of the Three Fist Demons practice the evil form of the Beast-Fist style known as Confrontation Beast-Fist Akugata.

By present time, a fallen student from the Fierce Beast-Fist school named Rio leads the Confrontation Beast Fist-style and rebuilds the Confrontation Beast Hall with intention of world domination. Bringing other Confrontation Beast-Fist users back from the dead as kyonshi, he collects Confrontation Ki, Fierce Ki's polar opposite, to revive the Three Fist Demons so that through their teachings, he can become stronger. To fight the new Confrontation Beast Hall, the Fist Sage Sha-Fu had been training two youths: Ran Uzaki and Retsu Fukami. Along with Jan Kandou, a feral boy raised by tigers, the Gekiranger team is formed to save the world from Rio's ambitions.