In the small town of Angel Grove, five disparate high school students—Jason, Kimberly, Billy, Trini, and Zack—stumble upon five mysterious coins that grant them superhuman strength. Their discovery leads them to an alien spaceship where they meet Zordon, an ancient warrior, and his robot assistant, Alpha 5. Zordon reveals that they have been chosen to become Power Rangers, a group of warriors with the mission to protect Earth from the evil clutches of an alien invader named Rita Repulsa, who has recently awoken from a long slumber and is searching for the powerful Zeo Crystal to conquer the universe. The teens must overcome their personal issues and learn to work together as a team to harness their new abilities and control the giant mechanical robots known as Zords.

As they train and attempt to bond over the immense responsibility thrust upon them, Rita gathers strength by creating an army of rock creatures and begins her assault on the town in her quest for the Zeo Crystal. She wreaks havoc, prompting the team to question if they truly have what it takes to save the world. Struggling with their own inner demons and the skepticism of their worthiness, the five teenagers must quickly rise above their insecurities and learn the true meaning of teamwork and trust to combat the impending threat before Rita attains unlimited power.