In the city of Angel Grove, California, Jason Lee Scott, Zack Taylor, Billy Cranston, Trini Kwan, and Kimberly Hart are hanging out (泡在某处 经常在一起)at Ernie’s Youth Center. The guys are working on karate, while the girls are practicing gymnastics. Farkas Bulkmeier and Eugene Skullovitch (a.k.a. "Bulk" and "Skull") come to harass(骚扰) them, but end up making fools of themselves.

The five teens 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 wizard who battled Rita several years ago, tells his robotic assistant, Alpha 5, to bring him five teenagers to defend the Earth from Rita.

Jason, Zack, Billy, Trini, and Kimberly are then teleported(传送) to the Command Center, where Zordon explains the situation and declares them as the first Power Rangers. They refuse to believe him, until Rita sends her Putty Patrollers(巡查 喽啰) to attack them. They are overpowered, but Jason suggests using their recently acquired Power Morphers. The five then morph into(变为) 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(召唤) the Dinozords and combine them into the Megazord. After an evenly-matched(势均力敌) battle, the Rangers force Goldar to retreat(撤退)when they summon the Megazord's Power Sword.

Back at the Command Center, the five teens are finally convinced(确信) that they can save the world from Rita's evil, and they accept Zordon's offer and under three conditions: not to use their power for personal gain, not to escalate(让战争升级) a battle unless Rita forces them to do so, and to keep their identities a secret. Zordon promises that he will be there to advise them whenever they need it.