The series takes place in the fictional town of , . On an exploratory mission, two astronauts discover an extraterrestrial container (referred to as a dumpster as a result of its smell) and breach the unit, inadvertently releasing the evil alien sorceress from 10,000 years of confinement. Upon her release, she and her army of evil space aliens set their sights on conquering the nearest planet: Earth. The wise sage , who was responsible for capturing Rita Repulsa, becomes aware of her release and orders his robotic assistant to select five "teenagers with attitude" to defend the Earth from Rita's attacks. The five teens chosen are , , , and . Zordon gives them the ability to transform into a fighting force known as the Power Rangers, providing them with an arsenal of weapons at their disposal, as well as colossal assault machines called Zords; which can combine into a giant humanoid machine known as the Megazord.
Despite the first season's popularity, Saban renewed Power Rangers for a second season in Fall 1994 and by that time, ratings went through the roof, stronger with such high ratings. The first 14 or so episodes of season 2 detained Zyu2 footage while Saban began buying only action footage and monster costumes from the following Sentai series . When Saban began production on Mighty Morphin Power Rangers' 2nd year, he didn't want the main Dairanger costumes as upgrades of the Power Rangers' main morphed forms, instead they only wanted the zords from Dairanger and Tommy's White Ranger costume, based on the Kiba Ranger from that series. Season 2 also introduced the series' first ever all-American made Power Ranger villain, . After his introduction to the show in the season 2 3-part opener "", Zedd became a fast growing and popular villain toward fans since his inception on Power Rangers. Saban didn't want the costume of Dairanger's main villain for Lord Zedd (though the costume was used for in , which was 9 years later). Most of the footage in Power Rangers' 2nd season was 100% American-produced and 50% Sentai created. The two-parter "" sought the return of Tommy Oliver, this time as the White Ranger. Since his return, fans enjoyed seeing him as this new Power Ranger though the Green Ranger powers (which were originally created by Rita) were no longer more. After Tommy's return to Power Rangers, the show introduced 3 rookie teens that later became Power Rangers- (), () and (). They took the places of 3 of the 5 original Power Rangers that were commissioned (according to the writers of the show) to the Angel Grove Peace Conference- Jason, Zack, and Trini. In Season 3, The season uses Zord footage from Ninja Sentai Kakuranger but overall, All 3 Seasons uses costumes from Kyoryu Sentai Zyuranger and the White Ranger costume from Gosei Sentai Dairanger.
The majority of the world had been destroyed by a computer virus, and now we have to fight to survive in a Terminator-like environment. We later found out that the RPM story was set in an Alternate Universe, but this story still held a great deal of appreciation with fans for trying something completely different. This was also the last Disney-produced series, as the Power Rangers franchise was soon reacquired by Saban Entertainment.
A new generation of Power Rangers must master the mystical and ancient Samurai Symbols of Power which give them control over the elements of Fire, Water, Sky, Forest, and Earth. Under the guidance of their all-knowing mentor and the aid of their devoted animal Zords, they battle the dark forces of the Netherworld and a mysterious Warrior bent on destruction.