When sorceress Rita Repulsa was released from her prison, Zordon had to take action and form the Power Rangers. Five high school students begin the legacy by using Power Coins to transform and ward off evil space aliens with their Dinozords.
With the Power Coins destroyed, the Rangers needed a new source of power, and so they reformed the Zeo Crystal, which turned them into the Power Rangers Zeo. Using their Zeo powers, they must protect the Earth from invasion by the Machine Empire.
When lady pirate Divatox threatens the safety of Earth, the Rangers' only hope lies in the amazing Turbo Powers, which have made them the Power Rangers Turbo. This revved up team finds assistance in the Blue Senturion, and the mysterious Phantom Ranger.
Blast off into the final frontier as the Rangers take off for outer space to prevent Dark Specter from stealing Zordon's energy. They become the Power Rangers in Space, soaring through the cosmos in the Astro Megaship, and fighting the princess of evil, Astronema.
The Power Rangers travel deep into space aboard a space station from Earth, where they encounter more powerful evil aliens. Power Rangers Lost Galaxy chronicles their fight to protect the colony, using the power of the Quasar Sabers, and their Galactazords.
When demons resurface to capture the city of Mariner Bay, a defense organization assembles a team to fight the forces of evil. The five heroes of Power Rangers Lightspeed Rescue utilize cutting edge technology to defend the city.
When a sinister mutant travels into the past, only one force can bring him in - Power Rangers Time Force. The legendary team battles to prevent Ransik from taking over the year 2001, aided by futuristic weapons and vehicles, as well as the Quantum Ranger.
The pollution of the Earth has allowed an ancient evil to escape. Ancient Power Animals choose young warriors to defend the planet as Power Ranger Wild Force. These heroes fend off the forces of the Org empire with savage weaponry and an army of Wild Zords.
Three rebellious students are the last ones remaining at their ninja academy after evil aliens attack the Earth. To save the world, their ninja master teaches them to harness ancient mystical energies that transform them into Power Rangers.
Dr. Tommy Oliver must recruit a lone musician, a champion gamer, and a hotshot soccer player to become Power Rangers to save the world against Mesogog. He must reignite his past as a Power Ranger, by becoming the Black Power Ranger and leading the team. With the help of a once evil White Ranger, the Power Rangers must bond with the Dino Gems and stop Mesogog once and for all.
Under the command of Anubus Cruger, a highly trained unit of police, the Space Patrol Delta, or S.P.D., has been formed to keep the peace. Five heroes are united together to serve and protect the galaxy as the Power Rangers S.P.D. - against the evil Emperor Gruumm, the commander of a battle space ship.
Planet Earth is living in a time of peace when quiet serenity is shattered under attack from a new evil... It is then that five daring teens learn their true identities - heroes entrusted with mystical powers destined to defend the Earth as Power Rangers Mystic Force.
The five jewels of the powerful Corona Aurora were spread throughout the Earth to prevent Moltor and Flurious, who were cursed for seeking it, from possessing it. Five young adventurers are recruited by the wealthy treasure hunter Andrew Hartford to become the Power Rangers to protect the Earth.
Three young people are selected to protect the world from the evil Dai Shi, who had escaped from his imprisonment and possess the body of their former schoolmate. They are trained by several teachers in the art of Kung Fu from fierce animal spirits to save the world.
A new computer virus Venjix Virus has taken over the world's communication, power and defense systems. built the Grinders, advanced robots and laid waste to the world. A new Power Ranger team was formed by Dr. K in the dome city of Corinth to fight the evil machines.
And I guess coming this year is the newest series:
I personally watched every series up to Mystic Force and a little of Jungle Fury before I started to lose interest in the repetitiveness of the show.
