Popular Angel Grove Children's Show host Captain Pete and his friendly robot known as Puppetman are targeted by the Machine Empire. They convert the bot into the Puppet Blaster monster, and use him to brainwash the kids into going on a riot, not to mention acting as human shields when the Zeo Rangerss attempt to put a stop to the misdeeds. Meanwhile, Bulk & Skull are forced to watch Lt. Stone's nephew for the day, a brat who doesn't need a ray to make him make their life a living nightmare!
Rocky's strange botany experiment, a plant that eats metal, and Skull's own one made from swiping part of his, get turned into a pair of Plant Monsters by the Machine Empire. One of which, the Pollenator, sprays its creator with a pollen that causes Rocky to turn into a living vegetable!
Tanya and Adam are exploring the new world of cyberspace with the help of Raymond, a computer whiz, at school. When they run into a computer virus, Mondo gets the idea to create Mean Screen, a horrible computer monster that will infect all of the computers in Angel Grove.
Tommy goes on a vision quest, seeking out the other half of the arrowhead he was given in "Sowing The Seas Of Evil." It's interrupted by the Punchabunch monster, who goes toe-to-toe with Adam, capturing the budding-boxer and forcing Red Zeo Ranger to face the monster in the ring to save his teammate. It all works out, as Tommy finds the solution to his spiritual unrest when he meets a man who claims to be his brother!
After two weeks of constant Cog attacks by the Machine Empire, the Zeo Rangers are run ragged, exhausted by both their superhero duties and those of their normal life. Having gotten them to a weakened, sleep-deprived state, King Mondo sends down the Somnibot monster, whose lullaby spell-singing manages to exploit this Achilles heel. Can the Gold Ranger wake them in time? Meanwhile, Bulk & Skull are entrusted to guard a safe containing a valuable item for one whole day, unaware that a cat burglar has his eye on it.
The mystery of the Gold Ranger's true identity intensifies when Borax, a member of the bounty hunter race known as the Vorax, arrives on Earth targeting the Ranger's new ally with savage intent. King Mondo sees great promise in an alliance with the Vorax, and offers to help him defeat and ensnare the Gold Ranger. Meanwhile, Bulk & Skull are hired to find a woman's dog, who went missing following a recent landing of Pyramidas.
Tommy and his mysterious friend race against time and, to make matters worse, they can't be transported to the Command Center! They can only hope that they can get there in time in spite of the Machine Empire's efforts to keep them from their destination.
As the Zeo Teens quickly warm up to their new teammate, Rocky find himself feeling left out and rejected by them. When King Mondo comes to Earth to retrieve a massively powerful sword, so he can destroy our heroes personally, the Blue Ranger faces the giant Machine Empire ruler alone in an attempt to prove himself. Meanwhile, Bulk & Skull are hired to track down the original Burble Baby Food label baby. They suspect it might be Jason! Also, Goldar & Rito are reunited with Rita & Zedd on the moon.
Aisha sends a package for Tanya that includes a key and a map of the island on which Tanya's parents disappeared. Desperate to find them, she entrusts the key to Jason while she goes to the island. Louie Kaboom takes an interest in the key upon discovering that it will unleash an enormous robot. Frustrated when Auric, the robot, won't fight do his bidding, Louie tosses the key away; Prince Sprocket eagerly snatches it up. He then tricks Auric into thinking that the power rangers are evil so that he will fight them. To the power rangers' dismay, Auric won't listen to ...
Katherine and Tanya are throwing a play about King Midas; Jason and Adam are dancing in it however reluctantly. Bulk and Skull are in need of a job so they bet the girls that they can get all the necessary props for the play. They go to find an assortment of gold props and get more than they can handle when Skull finds a golden dog statue that turns things to gold! When the rangers realize that it's a trap they go to battle, and Jason gets turned into gold!
There's a new student at Angel Grove High as well as two detectives that intend to replace Bulk and Skull. Practical jokes run rampant and it seems that no one is safe. An exasperated principal hires Bulk and Skull and their competition to find the culprits. It's Tanya and Katherine who discover who's behind it and are surprised at what they find. Meanwhile, Prince Gasket and his wife Archerina hatch a plan to get rid of Louie Kaboom by making him fall in love with Archerina and making him do her bidding.
The rangers are alarmed when Bulk and Skull recount their run-in with the Red Zeo Ranger 5 especially since they have yet to find him. Tommy has been brain-washed into thinking he's the King of the Machine Empire and that the rangers are his enemies! Jason and Katherine go to where Bulk and Skull claimed to have seen him; Jason gets sucked into another dimension where he must face Tommy who is more than willing to destroy him!
Two rangers have disappeared and none at the Command Center know how to find them. They can only watch in horror as Tommy tries to destroy his best friend. Bulk and Skull get sucked into that very dimension too and make an ally of a fellow prisoner who has a plan to help them escape. Rita and Zedd are horrified when they realize that if something isn't done, the Machine Empire will be victorious. So great their desire to personally destroy the rangers, they aid the rangers in getting what they need, but is it too late?
Tommy keeps reliving the same day over and over again but no one else notices anything weird, making him feel like he's going crazy. Upon visiting the Power Chamber, they discover something very distressing. They immediately go to fix the problem and find a monster determined to stop them. Things quickly worsen when the Cogs, Prince Gasket, and Archerina enter the fray. Will the rangers be able to stop this catastrophe?
The rangers are invited to a game similar to "Clue" in which they role play to discover where Detective Stone went. Archerina uses the opportunity to trap all the rangers except Katherine. Archerina's jealousy of Katherine overcomes her to the point that she wants to personally destroy her. Katherine must face her enemies all alone when neither her nor Zordon can contact the other rangers.
Jason realizes, to his horror, that he's losing his powers as well as his strength. Pursued by Rita, Lord Zedd, and the Machine Empire who are all greedy for his powers, he finds himself helpless against them. Fortunately, he makes a narrow escape and collapses at the Juice Bar. The rangers are alarmed when they discover that Jason will lose his life as well as his powers if they are not transferred back to the Treys which can only happen when the planets are aligned just so. Alpha 5 gives the rangers a map with which they find the place for the power transfer. King ...