An evil sorceress by the name of Rita Repulsa is freed from her space dumpster after being imprisoned for ten thousand years, and comes to Earth with intentions of destroying it. Meanwhile, an intergalactic being named Zordon and his assistant robot, Alpha, decide to recruit five teenagers and equip them with super powers in order to do battle Rita and her goons. Jason is made the Red Ranger and is given the power of the Tyrannosaurus. Trini is made the Yellow Ranger and is given the power of the Saber Toothed Tiger. Zack is made the Black Ranger and given the power of the Mastodon. Kimberly is made the Pink Ranger and is given the power of the Pterodactyl. And Billy is made the Blue Ranger and given the power of the Triceratops. The five teenagers now have the ability to morph into superheros as well as the power to operate their giant fighting machines known as the Dinozords. Together, they are the Mighty Morphin’ Power Rangers.

The Rangers are busy making preparations for Angel Grove’s International Food Festival. This gives Rita the idea to send down her latest monster, Pudgy Pig, to eat everything in sight. He proceeds to ruin the Food Festival and even eats the Rangers’ weapons. The Rangers realize they have to think fast if they plan on stopping him, and when they discover his one weakness, they come up with a plan to exploit it.

As the Rangers try to adjust to their new roles as Power Rangers, Rita plots to get rid of them once and for all and traps them in an alternate dimension. The Rangers must also do battle with Rita's latest skeletal creation, Bones; Trini, who is extremely afraid of heights, must learn to conquer her fear in order to save her fellow Rangers.

While Trini and Kimberly petition to have a local waste dump shut down, Rita Repulsa sends down an army of putties and her powerful Minotaur monster to distract them. Also, Zordon gives each of the Rangers their own special weapon to help in the fight against Rita. Jason receives the Power Sword, Kimberly receives the Power Bow, Zack receives the Power Axe, Trini receives the Power Daggers, and Billy receives the Power Lance. The weapons are very strong on their own, but when combined, they form the ultimate fighting machine.

As Jason tries to break a bench pressing record at the Youth Center, Rita sends Goldar and her new King Sphinx monster down to Angel Grove to attack the Rangers. As per Rita’s plan, the Rangers get split up from each other and Jason is left to battle the Sphinx on his own.

Rita sends the Gnarly Gnome monster down to Earth to hypnotize the children of Angel Grove using his dastardly music. The only person not affected by the spell, is Kimberly’s young friend, Melissa, who happens to be deaf. Because of this she is able to aid the Rangers in putting a stop to the monster’s plans.

When Kimberly and Trini are assigned to be big sisters to a troublesome girl, Maria, Rita kidnaps her and releases the Chunky Chicken monster on Angel Grove.

When Rita finds out that Billy is helping his young friend Willy with his science fair project, she releases the Eye Guy monster on Angel Grove to capture the boy.

For a school project, the Rangers must share a hobby or personal belonging of theirs with the class. Trini decides to talk about her doll collection, including her favorite one of all, Mr. Ticklesneezer. Things get bad, however, when Rita brings Mr. Ticklesneezer to life, and he begins to terrorize Angel Grove by shrinking everything in sight, and trapping them inside bottles.

When his friends plan Zack a surprise birthday party, he is led to believe they have forgotten his birthday. Things worsen, when Rita sends down The Black Night monster as her birthday present for Zack.

The Rangers, along with Trini’s cousin, Sylvia, try and enjoy a day of fun at the Angel Grove fair. Rita, who despises fun, sends the Pineoctupos monster to put a damper on their good time. Also, Sylvia gets turned into a cardboard cut-out.

When Baboo poisons Kimberly and Billy’s lemonade with a potion, they become punks upon drinking it, by terrorizing the kids at the school and being disrespectful to Zordon and the Rangers. Zordon has them locked up until he can find a cure, while Trini, Zack and Jason must do battle with the dangerous Terror Toad monster who defeats his opponents by eating them.

When Rita’s latest monster, Madame Woe, mistakes Billy’s love interest, Marge, for a Power Ranger and captures her, the Rangers come to her rescue.

When Kimberly joins her pilot uncle on an airplane, Rita uses a sleeping potion which knocks him out while he is piloting the plane. With very little help, Kimberly must then safely land the plane and join her fellow Rangers in battle with the Snizzard monster Rita has sent down to earth.

When Rita finds out that Trini’s scientist uncle is working on an invisibliity forumla, she sends down her latest monster, the Dark Warior, to capture him and obtain the forumla.

When Billy's switching machine experiment goes awry, he and Kimberly end up switching bodies. Kimberly, stuck in Billy's body, and Billy, stuck in Kimberly's must find a way to deal with the problem quickly when Rita sends the Genie Monster down to Angel Grove.

In part 1of this thrilling multi-part episode, Rita casts a spell on a new Angel Grove High student by the name of Tommy Oliver and lures him to the dark side. She then uses her previously unmentioned sixth power coin, which apparantly she had won in a battle with Zordon, to turn him into her evil Green Ranger. His mission: To destroy the other 5 Rangers.

Still recovering from the mysterious Green Ranger’s attack, the Rangers try to undo the damage he’s done to the command center. Meanwhile, Rita gives her evil Green Ranger the Sword of Darkness to seal the deal, and Tommy manages to teleport and trap Jason into Rita’s Dark Dimension where he must do battle with Goldar.

As the four remaining Rangers continue their search for Jason, unaware that he’s trapped in Rita’s Dark Dimension, they are then attacked by the vicious Scorpina. Eventually, Alpha is able to locate Jason and teleports him back into the command center, but the evil Green Ranger is still on the loose and the Ranger’s still have no idea who is behind that green mask.

As the Rangers use their Megazord to battle Goldar, Scorpina and the Green Ranger, they are crushed in battle and forced to retreat back to the command center. Meanwhile, due to the small visit the Green Ranger paid to the command center earlier, Alpha is now able to identify that Tommy Oliver is the evil Green Ranger.

The Rangers, now aware that their new friend Tommy is the man behind the Green Ranger suit, continue to do battle with him as he summons his Dragon Zord. When the Sword of Darkness is destroyed and Rita's spell on Tommy is lifted, the Rangers and Zordon extend Tommy an offer to join them in the fight against evil, making it now a total of six Rangers on the side of good.

When the cat’s away, the mice will play. As Rita rests, Squatt and Baboo attempt to take charge and send the clumsy Shellshock monster to Angel Grove. The Rangers, with their newest member, Green Ranger Tommy, on their team, must find a way to destroy it, before it destroys the city.

Rita switches out a Forrest Spirit Statue from Angel Grove park and replaces it with her own- one which holds her latest Spidertron monster inside. He puts a sleeping spell on the entire town of Angel Grove, putting everyone but Zack under a deep sleep, leaving him to face Spidertron alone.

With the Angel Grove parade around the corner, Kimberly is assigned to design a flower float for it. However, Rita sends down her putties to trash her completed project as well as unleashing her powerful Spit-Flower monster on the Rangers.

As partners Jason and Tommy, practice for the upcoming Team Ninja competition, they don’t seem to be getting along. To teach them the value of teamwork, Zordon sends them both on a dangerous mission to retrieve powerful new weapons for the Rangers, who are left behind to do battle with Rita’s new Super Putties.

When the gang attends a costume party, Rita spoils their fun by sending down the Frankenstein monster to crash the party.

As the Rangers take part in a school production of Rumpelstiltskin, Rita steals one of the props- Kimberly’s grandmother’s antique spinning wheel, and transforms it into the evil Wheel of Destruction.

Rita traps the Power Rangers on the Island of Illusion, where their greatest fears can destroy them.

The Rangers, still trapped on the Island of Illusion, learn that self-confidence will help them to face their fears and escape from the island.

When Jason and his cousin get their hands on a secret map, Rita sends down her ally, Scorpina, to find the Mirror of Destruction before they do, and sends down the Rockstar monster to distract the Rangers.

When Kimberly is having the worst day of her entire life, Rita takes note of this and sends down her Samurai Fanman down to Earth to make her day even worse. He traps Kimberly in an alternate dimension, and the Rangers must defeat the Fanman and get her out, before she’s stuck in there forever.

While Tommy auditions for a role in a karate commercial, his friends are in danger when they are put up against Rita’s latest creation, the Babe Ruthless monster as well as Scorpina.

With the Angel Grove High talent show around the corner, the Rangers have a lot to deal with when Tommy is kidnapped and imprisoned by putties, and Finster creates the Fang monster in celebration of Rita’s birthday.

Rita uses a green candle to wipe out the Green Ranger once and for all.

As Jason journeys to the dimensional prison to stop the green candle from burning out, Tommy battles the Cyclops with the Dragonzord.

While Zack trains a young student for a karate tournament, Rita sends her Hatchasaurus monster down to Earth.

The Ranger teens form a Clean-Up Club and take part in cleaning up Angel Grove Park, but Rita has plans of her own and sends the Polluticorn monster after them.

Rita creates duplicates of the Power Rangers and unless the real Rangers want the world to be taken over by the impostors, they must find a way to put a stop to their evil counter-parts.

It’s Power Rangers Day in Angel Grove- a day dedicated to honoring the Power Rangers. Rita spoils the town’s celebration by trapping all the citizens of Angel Grove in her alternate dimension, leaving the Rangers to do battle with Goldar and his new Cyclopsis War Zord.

The Rangers must continue to do battle with Cyclopsis, despite not being at full-strength. Even with the odds against them, they are eventually able to best Cyclopsis and cause some serious damage to Rita’s camp. After rescuing the trapped citizens of Angel Grove from Rita’s alternate dimension, the celebration is resumed and the entire city honors the Power Rangers. Zordon then gives the Rangers the choice to give up their powers and lead normal lives.

When the Rangers decide to start planting saplings in Angel Grove Park, Rita plants the Octoplant seed, which soon blooms into the deadly Octoplant monster.

Rita finds an opportunity to revive her Pudgy Pig monster with the Angel Grove Pet Adoption program going on.

Due to a bad experience as a child, Billy is deathly afraid of fish. Rita plays on his fear by casting a spell on him and bringing this fear to the surface. She also sends down her evil Goo-Fish monster to attack him and Kimberly, while the other three Rangers are away scuba diving.

The Rangers win a trophy for their work in the annual Angel Grove Oddball Games, but Rita has it stolen and proceeds to turn it into Goatan, the Stormbringer. Her latest monster proves to be far more challenging than the Rangers had thought, and also happens to interupt a date between Zack and his long-time crush, Angela.

When Jason gets a strange rash from a lost dog, the Rangers later find out that Rita is behind this as she sends her deadly Fighting Flea monster to destroy our heroes.

When the Rangers bury a time capsule for Angel Grove High School, they put in a picture of the Power Rangers, so the Angel Grove citizens who open it up 100 years from now would know of the heroes who bravely defended their city. Rita, sends down her Jellyfish monster to trap the Rangers in an alternate dimension, while she attempts to steal the time capsule and replace the picture of the Rangers with a picture of herself.

When the gang heads to a cabin in the moutains to study for exams, Goldar uses the Crystal of Nightmares to have their worst fears play out in their own nightmares.

While learning a new fighting technique, the Praying Mantis, Trini has some difficulty mastering the move. When Rita sends down her Mantis monster to face Trini, she quickly learns to grasp the concept and uses it to defeat her opponent.

Rita kidnaps and traps the Ranger’s parents in an alternate dimension and uses them as leverage to obtain the Ranger’s power coins. The Rangers are now powerless in stopping Rita, who now has their coins and has unleashed the Dragonzord on Angel Grove.

Tommy decides to pay a visit to his friends, and just in time too. Zordon notifies him of the situation and through borrowed power, he is able to once again morph into the Green Ranger. He is sent on a mission to retrieve the other five power coins, but is injured in the process. Still, his mission is a success, and the Rangers’ power coins are returned to them. They finish off Rita’s latest monster, Dramole, and manage to free their parents from Rita’s dimension. Finally, Tommy decides to stay on board as the Green Ranger for as long as his temporary power will allow him.

When Billy receives his very first B, Rita who obviously can't tell the difference between the letter grade B and an actual bee, mistakenly thinks it would be clever to send down the Grumble Bee monster. Trini and Billy are forced to battle it on their own, as Zack, Kimberly and Jason are a little 'tied up' elsewhere.

Tommy and Jason are teaching a self-defense course for the mothers of Angel Grove, and when Rita hears Tommy utter the phrase Two Heads are Better than One, she decides to take his advice for herself and sends down the two-headed Parrot monster to attack the Rangers.

Rita interrupts Zack’s magic show at Ernie’s Juice Bar, when she sends down the Peckster monster to battle the Rangers.

Kimberly is a contestant on a Halloween-themed game show by the name of Trick or Treat. She ends up having to forfeit when Rita sends the Pumpkin Rapper down to Earth and she and her fellow Rangers have to go stop him.

When Jason and Zack try and help a young boy, Roger, make the soccer team, Rita sends down her Socadillo Monster who plays soccer by his own rules.

When Tommy and Jason try to instill some good values into Angel Grove’s youth, Rita, with her Slippery Shark monster, casts a spell on the two, making them hate one another

Kimberly’s younger cousin Kelly is having difficulties obtaining a spot on the Angel Grove Cheerleading squad. When Rita sends down the Lizzinator and has Kelly kidnapped, she must escape by putting to use everything she’s learned- and with a little help from the Rangers of course.

When Tommy is having trouble making the Angel Grove High Football team, Rita sends down the Rhino Blaster and a few putties to challenge the Rangers in a good old fashioned game of football.

Goldar and Rita select putties worthy enough to become evil Power Rangers. They are given the badges of darkness, allowing them to turn into the evil counterparts of the Rangers. They, along with Rita’s latest creation, Commander Crayfish, are sent down to Earth to destroy the Rangers.

Zack wanting to impress Angela, buys her a pair of pearl earrings for her Birthday. The earrings, which have been cursed by Rita cause everyone in the room to freeze once Angela puts them on. This includes Kimberly, as well as Trini, Billy and Jason who were there to stop this very thing from happening. Now it’s up to Zack and Tommy to stop the Oysterizer alone and undo the earring’s effects.