Billionaire treasure hunter Andrew Hartford finds the ancient Corona Aurora, known as the powerful Crown of the Gods. But in the process, he unknowingly awakens two warring alien brothers, Moltor and Flurious. Enlisting stuntman Dax, championship racecar driver Ronny, master safecracker Will, and brilliant college student Rose to join him in keeping the world safe from the aliens as a new team of Power Rangers, Hartford refuses to allow his teenaged son, Mack, to risk his life by being part of the team. When given the chance to become the Red Ranger, can Mack prove ...
Hartford is kidnapped by Moltor, who also steals the Corona Aurora. Mack must prove himself as the Red Ranger and aid the team in saving his father, before they must use their DriveMax Zords to save an island from destruction by a giant sea creature.
Dax rescues a girl named Mira from a monster attack, and quickly they become a couple. Can their romance survive the strain it's putting on the Blue Ranger's place on the team, or will a mysterious third villain mastermind put an end to their relationship? Meanwhile, the Rangers must make use of Will's theiving skills to track down two more scrolls.
After putting a bystander in jeopardy, Mack doesn't feel he's cut out to be a Ranger. But the team'll need him to pilot the Drill Driver, when Moltor's weather device creates an avalanche of snow on top of their Zords! Also, the team prepares to seek the jewel in St. Lucia, but Dax believes the island to be haunted.
Searching the island of St. Lucia for the first jewel of the Corona Aurora, the Rangers stumble upon the ghost of Brownbeard, the pirate. They believe the Eye of the Sea he has sought all his life is the same gem they seek. Brownbeard possesses the uptight Rose, helping her to loosen up and have fun as Rosie The Bold. Can the team find the jewel before Miratrix and her cannon monster do?
Ronny's competitive nature and drive to always win begins to grate upon her teammates. Will things get worse when she butts heads with Mack over first usage of the latest weapon? Meanwhile, Moltor has his Lava Lizards compete against each other to prove superiority. The winner then becomes his newest monster, Valcon. But to truly become a super dragon, he'll need the powerful scale of an actual dragon. Can the Rangers stop them from obtaining it?
Will is fired by Hartford for selling Zord tech on the side! Taking his Tracker with him, the Black Ranger joins up with Miratrix, who's already beat the Overdrive Rangers to the next piece on their jewel-chase. After helping to free her master, Kamdor, from his locket prison, is Will's betrayal all it appears to be?
Flurious & Moltor put aside their sibling rivalry and combine forces against the Rangers. With Moltor's Giant Robot and Dragonizer, they manage to capture the DriveMax Megazord! Mack ends up remaining within, and is taken prisoner on a hidden island. Will he be able to turn the polar opposite brothers against one another and get free, or will Andrew Hartford have even more of a reason to worry about his son?
The Rangers visit Rose's college in London to try to get the parchment deciphered, only to lose it to Tyzonn, Moltor's latest alien lizard henchman. But Mack, who manages to tear an important piece of the parchment off, notices his new enemy might not be as bad as he appears. Can the Red Ranger convince Tyzonn to give back what he stole, at the risk of the wrath of Moltor and his latest monster, Bullox? Or will he honor the deal that shamed him in the eyes of the people of his planet and give him the key to the second jewel in the Corona Aurora?
Mack joins forces with Tyzonn, learning that the reptilian creature is actually a human from the planet Mercury, cursed by Moltor. If the Red Ranger can then convince his Overdrive teammates to trust in him as well, they may have the means to recover the second jewel to the Corona Aurora from its lava crater hiding place. That is, if they can get past Moltor's Bullox monster first! And, will the new Sonic Streaker be enough to take on the flying menace of Moltor's Lavadactyls?
The search for the next jewel leads the Rangers to Portugal, then to Brazil, with a new group of villains, the Fearcats, always one step ahead of them! These intergalactic feline fiends are trying to free their fearsome friends from a mirror prison, and need the Corona Aurora's power to do it. As it turns out, hunting the Fearcats happens to be the mission Tyzonn came to Earth for. He reunites with the Rangers in an effort to stop them. But Ronny ends up captured and her Overdrive Tracker used to breach the prison! It's up to Tyzonn to save her, but what secret shame ...
Jessica Jeffries, an old college pal of Mr Hartford's turned big time news reporter, snags an exclusive interview with the Rangers for her show, "Good Morning, San Angeles." But thanks to some subterfuge by Miratrix, the big event leads to Tyzonn getting trapped between his human and mercury forms! Can he be saved in time to use his new Zords to aid the Rangers against the Giant Robot-piloting Fearcats, with the jewel-related Cannon of Ki Amuk at their disposal?
Will attempts to teach Tyzonn how to blend in on Earth, but when the Mercurian starts to copy Will a little too closely, the pair clash. Meanwhile, fed up with Flurious yelling at him, Norg runs away from home, taking refuge in Moltor's lair. And on top of all of this, the Rangers must stop Moltor from obtaining the key to the next jewel: Mjolnir, the enchanted hammer of Norse God of Thunder, Thor.
With the Cannon of Ki Amuk and Mjolnir in their possession, the Rangers track the next clue to Mexico. There, the team has to contend with Kamdor & Miratrix, Flurious with his Chillers, and even Moltor and his Lava Lizards! Luckily, the owner of the hammer, Norse God Thor, arrives to help out. But with his petty behavior and greedy desire for the Corona Aurora, is this God of Thunder the real deal? It's up to Ronny to use her resemblance to the Goddess Freya to get the hammer back from him! Oh, and not to be left out of all the action, the Fearcats unleash their very ...
Having swiped the Paedra Aztec Del Compass, the next clue to a jewel of the Corona Aurora, from the Rangers, Moltor puts it in the possession of his old friend, Blothgaar. During battle with the Rangers, Blothgaar uses the Compass' ability to alter chi & li to give Mack a serious case of bad luck! Despite disbelieving in it, the Red Ranger finds trouble at every single turn. Will use of his friends' lucky gifts (Dax's Grandfather's lucky shark-swimming shirt, Ronny's lucky stinky socks, Will's lucky scarf, Rose's Dad's lucky Sombrero, and Tyzonn's lucky potted plant) ...
Using the compass, the Rangers finally find the 3rd Jewel of the Corona Aurora. Will is entrusted to get it back to the base, but is ambushed by Kamdor & Miratrix, and loses it to the villainous pair. With Andrew angered at him, he resigns, only to have Spencer offer him another chance. Meanwhile, Moltor offers the Fearcats some invincible Super Armor. With their latest Giant Robot already giving the Rangers a tough time, can Will get to the Armor before the Fearcats, and make up for his prior failure?
With the Veteran Rangers now on the job, the Overdrive Rangers decide to return to their normal lives. Except for Mack who's willing to do anything he can to help. Mack tries to convince his team to return to help him on a quest for a relic which could be used against the Rangers, but they initially refuse, so Mack goes on his quest solo. Meanwhile Adam leads his team to Angel Grove, hoping to find an old friend who can fix the morphing grid.
The Rangers get a day off, and plan a relaxing picnic in the forest. Unfortunately for Rose, Tyzonn is obsessed with getting to know her better, which goes from flattery to annoyance very quickly. The Fearcats just happen to be in the same forest, and while searching for the powerful Centurion Torch to use in their latest Giant Robot, they put up a Lamporean force field. Our heroes bump into it, and despite Tyzonn claiming that forming a human chain with his Mercurian powers will allow them passage, they end up separated... with Rose stuck inside the force field with ...
While preparing for the annual Halloween party (which Will thinks is a waste of time!), the Rangers respond to a distress signal -- only to learn that it's a trap, set by the Fearcats and Moltor -- to abduct Ronny, and the Sentinel Knight, and drain her, of her life force -- so that they can power up their latest weapon; Unfortunately, Will is abducted, as well -- and considered "expendable"...
With Ronny's life force fading, quickly, Will gets some "unexpected help", in tracking down the Fearcats and Moltor; The other Rangers find a clue, to the next jewel, in Egypt, as a new fleet of Zords are brought into action.
Mack struggles with the knowledge of his "birth" and his identity as a person and a Ranger as a result. Meanwhile, Mig and Benglo are helped in their newest plot by a third Fearcat, and Tyzonn's history with the aliens is revealed.
The Fearcats use the mystical Octavian Chalice to synthesize a monster capable of destroying the planet. Meanwhile, on Mercuria, Tyzonn's previously dead fiancé claims that he was never a Ranger, and that the entire experience was a dream.
While the other Rangers continue to be outmatched by the Fearcats and Agrios, Tyzonn begins to accept his fiance Vella's claims that he was never a Power Ranger. He eventually learns the truth, but gets a double shock when he discovers who's behind this charade, and how! It all leads to a showdown that will narrow the field of Corona Aurora seekers down a faction.
Using the Octavian Chalice, the Rangers journey to Greece in an attempt to find the next jewel via an ancient ritual. But Kamdor and Miratrix interrupt the ceremony, making their ultimate stand against their enemies, and each other! Meanwhile, Norg sets out to prove himself useful to Flurious... and succeeds!
With the ultimate power of the Corona Aurora at his disposal, Flurious freezes all of San Angeles. The Rangers make their final stand against him to save the world from his evil power, but in their darkest hour, will a sacrifice from Mack be enough to stop Flurious?