In the Cenozoic-era, six interplanetary warriors, the Power Rangers, are tasked with protecting life on Earth and the Zeo Crystal. The Green Ranger, Rita Repulsa, betrays them and plans to dominate the universe. The Red Ranger, Zordon, survives Rita’s attack and hides five of the Rangers’ power source, the Power Coins. He orders Alpha 5 to perform a meteor strike that kills him and sends Rita to the bottom of the sea, foiling her scheme.
In 21st century Angel Grove, high school football star Jason Scott is dismissed from the team and placed under house arrest after a failed prank. In school detention, he encounters Billy Cranston and Kimberly Hart. After defending Billy from a bully, Billy offers to deactivate Jason’s ankle monitor for help at an old gold mine that evening. Once there, Jason leaves to explore and runs into Kimberly. Billy detonates explosives to break some rock, attracting the attention of Jason, Kimberly, and nearby students, Trini and Zack. The five discover the Power Coins and each take one. While escaping mine security, their car is hit by a train. The five find themselves at home the next morning and discover they have been granted superhuman abilities. Elsewhere, Rita’s body is found. Waking, she goes on a rampage, hunting pieces of gold to raise her minion Goldar to find the Zeo Crystal.
The five teenagers return to the mine and discover an ancient spaceship where they meet Alpha 5 and Zordon’s consciousness. They inform the teenagers about the Rangers history and Rita, warning that they have eleven days until Rita has her full power, finds the Zeo Crystal, and uses it to destroy life on Earth. The five leave the ship with no intention of returning until Zordon pleads with Jason to convince the team.