Rita Repulsa hatches her newest plan: her latest monster, Twin Man, and a team of four Putties will go to Earth, masquerade as the Power Rangers and ruin their reputation. Once they arrive on Earth, Twin Man and his Putties disguise themselves as the Rangers, with Twin Man as Jason. They also have to wear dark sunglasses to hide their red eyes.
The fake Power Teens enter Angel Grove High School and start sabotaging the school's drinking fountain by pouring laundry detergent into it. Bulk and Skull walk by, with Skull hitting on the fake Kimberly and the fake Billy grabs a friend of Billy by the shirt and tosses him on the floor. Soon, Mr. Caplan goes to have a drink, but gets squirted in the face with suds. When Caplan sees the fake rangers laughing with the fake trini saying "Got Ya", He yells at the teens that they're going to detention. The impostors then leave, just as the real Power Teens exit a classroom. They see what's happening, and Jason turns the fountain off. But unfortunately, the five are forced to take the blame for what their doppelgangers did by sharing detention with Bulk and Skull.
Meanwhile, Twin Man and his Twin Rangers, now morphed, attack downtown Angel Grove.
Back at the school, the real Power Rangers discover first hand what Bulk and Skull do whenever they're in detention, Skull asks Kimberly about their date, but is rejected. Soon, when Bulk pulls out a TV from his schoolbag, there's a news report that the "Power Rangers" are attacking innocent people downtown. The five friends are shocked to see this and want to stop them, but they can't since they're in detention. However, Zack has an idea. He asks Bulk and Skull if they would like to see a magic trick. The two bullies agree, and Zack asks them to cover both their eyes and ears, and start counting to ten.
Soon, the Rangers morph and teleport downtown, just as Scorpina and the Twin Rangers cause havoc. And so, it's Ranger against Ranger. The girls, Billy and Zack easily defeat their clones, who turn back into Putties, as Jason manages to defeat Twin Man and shed his disguise. Then, the Power Rangers destroy Twin Man with their Blade Blaster tower formation and the Power Blaster. Not too long, the citizens of Angel Grove show up and thank the Rangers for getting rid of the impostors.
Back at Angel Grove High, Bulk and Skull notice that the teens have disappeared, so they report it to Mr. Caplan. But, the five Power Teens quickly teleport back into the classroom in time. Bulk and Skull are confused on how they did it, and Jason and Kimberly explain that it was all done with mirrors. The five teens then head home, while Bulk and Skull are stuck with even more detention.
- Absentee Actor: Subverted, Zordon and Alpha 5 only appear in one scene, and are already aware of the situation.
- Bad is Good and Good is Bad:
- Rita tells Twin Man and the Putties to "do [their] best to do [their] worst."
- While watching the news about the Power Rangers turning evil, Bulk and Skull say "all right", much to the chagrin of the real Rangers.
- Big Entrance: The Fake Power Rangers march shoulder-to-shoulder on top of a building, looking down on the citizens right before they strike.Evil Red Ranger/Twin Man: (firing his Blade Blaster) Surprise!
- Big "WHAT?!": Kimberly does this when Mr. Kaplan sends the Rangers to detention. They were framed by Twin Man and the Putties.
- Death Glare: The teens deliver one to Bulk and Skull for cheering on the Power Rangers "turning" evil, although they could've found it an exciting news story.
- Early Installment Weirdness: Bulk and Skull cheering on the Power Rangers for committing evil deeds is brow-raising considering how later in the Season 2 opener, and for the remainder of their tenure, they'd proclaim how much they adore the rangers, even stand up for them in the finale for In Space, for their constant altruism. Considering that this was intended to be the penultimate episode before "Doomsday", this aspect of their personalities may have been changed for later installments or they found it awesome news story.
- Get Out!: Or in this case "Get In". After seeing the imposters attacking the city on Bulk's TV and realizing they were framed for the prank, the Rangers try to figure out how to get out of detention. Kimberley tries to sneak out. However, Bulk and Skull know better than to do that. Bulk says that he wouldn't as she'll be back. Skull then counts down from three and cue Mr. Caplan bringing Kimberly back in saying "And stay in."
- Hammerspace: Bulk has a small lunchbox which his mom somehow crammed a bunch of food into it (including a mustard bottle, ketchup bottle, ham, footlong, pineapple, cream pie, etc). The Rangers are perplexed.
- Last-Second Word Swap: "That's bogus! We— I mean the Power Rangers would never join the forces of evil!"
- The Psycho Rangers: First instance of the trope namer in the franchise; the Fake Power Rangers were disguised Putties who attempted to tarnish the reputation of both the Rangers and their civilian counterparts. This included shooting civilians, humiliating their school's principal in front of the other students, and wearing sunglasses all the time.
- Shout-Out: "Mirrors, Mirrors, all around! Smash the Rangers to the ground!"
- Suddenly Voiced: Twin Man's Zyuranger equivalent never spoke.