A team of teenagers with attitude are recruited to save Angel Grove from the evil witch, Rita Repulsa, and later, Lord Zedd, Emperor of all he sees, and their horde of monsters.

While fighting Cole, Master Org realizes that there something about him that connects his past that remains to be the last puzzle of a "Revenge" mission years ago, so eventually he had a General Org to awake a very dangerous and powerful Duke Org to help take down the Rangers, Zen Aku. Upon returning after 3000 years, Zen Aku begins to showed some unique traits of him compared to other Orgs, such as having his own Zords and Megazord, while doing so steals some of the Rangers' Zords.

Cole leaves his home in the Amazon jungle in search of his destiny, carrying his mysterious Red Animal Crystal, a symbol whose meaning he doesn't yet understand. Finding himself in the Animarium, a magical kingdom hidden in the sky, Cole is befriended by giant animals -- the Wild Zords. Their king, Red Lion, tells Cole that his Red Crystal links them, and Princess Shayla tells him that he has been chosen to lead the Rangers. As Danny, Max, Alyssa, and Taylor show Cole their Animal Crystals, Cole realizes he is indeed a Ranger. Repeating the "Wild Access!" call, Cole morphs into Red Ranger and joins the others in a fight against Plugma Org and Turbine Org, who are terrorizing the city.

Five Ancient Zords are discovered by each of the Rangers. Alyssa discovered the Elephant Zord through a Field-trip for her college, Max discovered the Giraffe Zord through a nightmare of the Rangers being destroyed, Taylor discovered the White Bear and Black Bear Zord through two twins she discovered breaking into a Air Force, and Cole discovered the Gorilla Zord while on his search for the Soul Bird to restore his Lion Zord. But while this going on, Master Org attempts to steal these Zords before the Rangers can.

While on a field trip for her archaeology class, Alyssa discovers a glowing animal-patterned design in a cave that looks remarkably like the design on the Rangers' belt buckles! Excited, she tells Princess Shayla, who, along with Cole, returns to the cave with Alyssa. Tire Org comes after them and traps the Princess. When the Wild Zords hear the news, they send five Savage Cycles to help. The Princess is freed, but Tire Org grows bigger, and even MegaZord can't defeat him. The Princess is again captured and taken to Master Org, who demands possession of the mysterious animal power in the cave. When the Princess explains that the animal can only be freed by its rightful guardian, Master Org angrily destroys the key, trapping the animal inside forever. But suddenly, a crystal appears to Alyssa -- she has been chosen guardian! Alyssa releases the new Zord -- an elephant, and the new Wild Zord join forces with Megazord to try to defeat Master Org! Will they succeed?

Zen-Aku, the strange wolf creature, is still confused about his identity. Seeking revenge against the Rangers, he is puzzled by his apparently human tendencies when he rescues a wolf pup. Animus, the lord of the Wild Zords, appears to help Zen-Aku remember who he is, but Nayzor tricks him and he completely forgets who he is again. During a lunar eclipse, however, Zen-Aku suddenly transforms into his real human form -- that of Merrick, a powerful warrior. Merrick explains to the Rangers that 3,000 years ago, he put on the wolf mask to defeat Master Org, but was then cursed to become Zen-Aku. Princess Shayla orders the Predazord destroyed, believing this will remove the curse. The Rangers vanquish the Predazord, and Merrick becomes himself again! Trying to set things straight, Merrick sets off to face Master Org, but he meets up with Nayzor and the Quadra Org as well. Can he defeat them? If so, will this once very old friend become the Rangers' new friend and stay with them?

Intent on defeating the Rangers once and for all, Master Org releases an Org General, Nayzor, from his stone tomb. Nayzor, in turn, releases Zen-Aku, a wolf-like mechanical beast who has been imprisoned for 3,000 years, and Zen-Aku traps Elephant Zord! His own true identity unknown to him, Zen-Aku at times seems to be the Rangers' enemy and at times, a friend. He also commands three Wild Zords of his own. After the Rangers defeat Vacuum Cleaner Org and later, Bus Org, Zen-Aku combines his Dark Wild Zords to form Predazord, which defeats Megazord, and Zen-Aku gains control of Giraffe Zord! As Taylor and Princess Shayla search for clues about Zen-Aku, the strange wolf creature suddenly shows up with Motorcycle Org. Although the Rangers defeat the Org, Zen-Aku gains control of the Bear Crystals, and things look bad for the Rangers. The only sign of hope comes when Zen-Aku remembers parts of his past and he becomes friendlier. Could it be that Zen-Aku was once a friend to the Rangers?

Beast-Fist is a form of martial arts where the powers of a beast can be acquired by sensing the beast in their hearts. There are two relative schools of the Beast-Fist. One, the Beast-Fist of justice, Geki Juken Beast Arts. And one, the evil Beast-Fist of Rin Juken Akugata. The two schools of warriors learn and change in order to increase in power every day, as they are destined to clash.