Day of the Dumpster (Revisited Series)

Plot
Following the accidental release of long-imprisoned evil space-sorceress Rita Repulsa, a benevolent sage known as Zordon drafts a group of five children to help protect the planet as dino powered warriors of goodness.

Synopsis
Two astronauts explore the moon and come across a space dumpster. When they open it, the evil sorceress Rita Repulsa and her minions Goldar, Squatt, Baboo, and Finster emerge from a 10,000-year captivity. Rita decides to conquer the nearest planet, Earth and rebuilds her palace on the moon.

In the city of Angel Grove, California, Jason, Zack, Billy, Trini, and Kimberly are hanging out at at Angel Grove Elementary School's playground, with the school day having ended. The guys are working on karate, while the girls are practicing gymnastics. Bulk and Skull come to harass them, but end up making fools of themselves.

The five kids are later sitting down to some fruit shakes from Ernie’s Juice Bar when Rita causes an earthquake. In the Command Center, Zordon, the wise sage who battled Rita long ago, tells his young robotic assistant, Alpha 5, to bring him five "curious and inquisitive humans" (children) to defend the Earth from Rita.

Jason, Zack, Billy, Trini, and Kimberly are then teleported to the Command Center, where Zordon explains the situation and declares them as the first Power Rangers and the personal guards of Alpha 5. Most of them (save for Kimberly) refuse to believe him, until Rita sends her Putty Patrollers to attack them as they leave. They are overpowered, but Jason suggests using their recently acquired Power Morphers.

The five kids then morph into the Power Rangers for the first time, defeating the Putties in the process. Rita, however, uses her magic staff to turn Goldar into a giant to attack the city, but the Rangers summon the Dinozords in response and combine them into the Megazord. After an evenly-matched battle, the Rangers force Goldar to retreat when they summon the Megazord's Power Sword.

Back at the Command Center, the five kids are finally convinced that they can save the world from Rita's evil and protect Alpha, and they accept Zordon's offer not to use their power for personal gain, not to escalate a battle unless Rita forces them to do so, and keep their identities a secret (though when Kimberly asks why they have to do that, Zordon explains that if their identities are discovered, Rita or any other villains will seek them out and attack them). Zordon promises that he will be there to advise them whenever they need it, and Alpha promises that he will help them as well. And so, the first team of Power Rangers unites to defend the Earth and protect the little robot.