|This article is about a/an three-part episode in Mighty Morphin Power Rangers.|
The 1st Zeo Serial Short aired before a later airing of Part 3.
From his evil palace, Lord Zedd observes the attack on the planet Edenoi by the evil Count Dregon. Meanwhile, the Rangers plan to teleport to the planet for Alpha 5, discovering that Alpha was "born" there and that the planet's king built him long ago. When they arrive, they find themselves embroiled in the attack and in the presence of strange alien life forms and one very mysterious and powerful being. Kimberly continues to battle Repellator while the other Rangers continue their fight with the Plague Patrol and the Masked Rider battles the Cogwarts. This setback outrages Count Dregon. Meanwhile, Zedd makes his monster grow and it's up to Kimberly to devise a plan.
While monitoring the galactic scanner, Alpha 5 sadly expresses that his home planet, Edenoi, is under heavy attack and he is worried about his "father", King Lexian. However, the scanner picks up no trace of him, making the little robot even more upset. When the Rangers check up on him, Alpha relays the information to his friends, who decide to go check out Edenoi on Alpha's behalf.
The Edenites and Masked Rider with the other Rangers temporary take refuge inside a cave. After demorphing from his form as Masked Rider, Dex tells them the story of Edenoi and how it came under the attack by Count Dregon. He and his friends originally didn't trust the other Rangers to help them until they reveal they were friends with Alpha 5, whom is from Edenoi. Aisha asks of Lexion's whereabouts since Alpha is worried about him. Dex reveals he is alive and is his grandfather, to the relief of the other Rangers.
Back on Earth, Kimberly contacts Zordon and Alpha 5 for any news of the others. Alpha reassures her they're fine and she needs to focus on getting better. At the Youth Center, Skull refuses to go along with another of Bulk's schemes when it comes to learning the identities of the Power Rangers. Bulk tells him they will pretend to be Rangers themselves, not search for them, and Skull agrees.
On the Moon and in his attempt to keep Count Dregon from catching up to him, Zedd orders Finster to make a monster to take advantage of Earth's lack of defense. Finster creates Repellator and he is sent to Earth to attack Angel Grove.
Back on Edenoi, Count Dregon's forces overruns the Rangers and Dex. Transforming back into the Masked Rider, he and the other Rangers fight off the Plague Patrol.
On Earth and in the Command Center, Alpha 5 is alarmed when he and Zordon sees Repellator on the Viewing Globe. He tries to contact the other Rangers, but is cut off in his attempt. Left with no other options, Zordon tells Alpha 5 they must take a risk and call a bed-ridden Kimberly into battle against Repellator. After morphing into the Pink Ranger, she begins her battle with Repellator.
While trying to deal with the lack of communication with the other Rangers, a sick Kimberly is having a hard time with Repellator. Frustrated with her for continuously sneezing on him, Repellator is about to finish Kimberly off. That is until he starts sneezing and realizes he's caught her flu. Repellator is forced to retreat back to the Moon. Zordon and Alpha briefly converse with Kimberly and has her remain on standby just in case Repellator returns.
On Edenoi, the other Rangers are aiding Dex in his fight against the forces of Count Dregon (who's also revealed to be Zedd's rival). Zordon informs them of the situation back on Earth with Zedd and Rita's monster, Repellator. While Kimberly is able to hold him off, she is still sick and needs their assistance soon. The other Rangers must quickly finish off the battle to return home.
Back at Lord Zedd's moon palace, Repellator returns sick and asks for Zedd and Rita's aid. They are furious and displeased with the fact that a monster has fallen victim to a human flu virus and send him to Finster. Despite his warning for Repellator to remain in bed for 7-10 nights with lots of bed rest, Finster offers him a pill for him to temporarily feel better.
Bulk and Skull attempt to woo two potential dates by pretending to be Power Rangers themselves, which goes awry when Repellator shows up healthier. Zedd then takes advantage of the situation by making Repellator grow, using his growth grenade.
At the Command Center, Kimberly and Alpha watches an enlarged Repellator. She decides to go back in action to try and stall him until the other Rangers return.
Back in Count Dregon's ship, one of Dregon's generals informs him about the other Rangers coming from Earth. This gives Dregon an idea to follow them back to Earth. On Edenoi, the other Rangers are able to hold off Dregon's forces and return home to meet up with Kimberly. They are unaware that Count Dregon and his minions are following them to Earth.
Much to Zedd's detest, the other Rangers return home and meet up with Kimberly. Calling on both the Thunder Zords and the Tiger Zord. After a long battle between them, the Rangers destroy Repellator with the Thunder Megazord saber.
On the Moon, Lord Zedd is furious with the loss and fears humiliation from Count Dregon if this gets out to him about Zedd's failures. The episode ends with Lexion warning Dex of Dregon's intent to take over Earth and he must take his fight there.
- Jason David Frank as Tommy Oliver (Mighty Morphin White Ranger)
- Steve Cardenas as Rocky DeSantos (Mighty Morphin Red Ranger)
- Johnny Yong Bosch as Adam Park (Mighty Morphin Black Ranger)
- David Yost as Billy Cranston (Mighty Morphin Blue Ranger)
- Karan Ashley as Aisha Campbell (Mighty Morphin Yellow Ranger)
- Amy Jo Johnson as Kimberly Ann Hart (Mighty Morphin Pink Ranger)
- Paul Schrier as Farkas "Bulk" Bulkmeier
- Jason Narvy as Eugene "Skull" Skullovitch
- Richard Genelle as Ernie
- David Fielding as Zordon (face)
- Robert L. Manahan as Zordon (voice)
- Sandi Sellner as Alpha 5
- Richard Steven Horvitz as Alpha 5 (voice)
- Carla Perez as Rita Repulsa
- Barbara Goodson as Rita Repulsa (voice)
- Ed Neil as Lord Zedd
- Robert Axelrod as Lord Zedd (voice) and Finster (voice)
- Danny Wayne Stallcup as Goldar
- Kerrigan Mahan as Goldar (voice)
- Michael J. Sorich as Squatt (voice) and Cyclopter (voice)
- Dave Mallow as Baboo (voice) (as Colin Phillips)
- Ted Jan Roberts as Dex
- Tetsuo Kurata as Dex (Japanese Footage)
- Traci Bellushi as Zaruis
- Peter Shinkoda as Ferrian
- Winston Story as Donais
- Ralph Votrian as King Lexian
- Ken Merckx as Count Dregon and Repellator (voices)
- Jennifer Tung as Nefaria (voice)
- Steve Kramer as Cyclopter (voice)
- Michael McConnohie as Gork (voice)
- Julie Maddalena as Fact (voice)
- Paul Schrier (Bulk) and Jason Narvy (Skull) do not appear in Part I of this episode.
- This episode is the third Alpha 5-focused episode. The first is "The Wanna-Be Ranger", and the second is "The Wedding".
- This story marks the end of Bulk and Skull's quest to discover the Power Rangers' identities, with Skull flat-out refusing to go along when he believes Bulk is going to suggest another attempt to find them.
- Alpha is revealed to be from Edenoi in this episode, and that King Lexian is his "father"; if the latter is as true as Alpha claims in his explanation to the Rangers, this would make Alpha a (presumptive) prince and Dex would be his "cousin".
- Last time the Z Putty Patrollers appear in the background. They reappear with Rita & Zedd on the Cimmerian Planet in Space's "From Out of Nowhere".
- First team-up that the Rangers team-uped with a non-ranger, followed by Space's "Shell Shocked", where the Space Power Rangers team-up with the Ninja Turtles.
- The Repellator monster is the Silverhorns suit from "The Power Transfer" repainted green and with a long red tongue attached.
- This three-parter sets up the short-lived Masked Rider series, though that series would ultimately be considered non-canonical to Power Rangers and vice-versa. Though the one shot Masked Rider comic published by Marvel Comics, would feature one more crossover between the two series.
- Footage of the Rangers' fight against Dex and the Edenites was shown on the VHS release of the Masked Rider episode "Super Gold".
- No mention is made during this story of the fact that Count Dregon is King Lexion's son and Dex's uncle.
- Despite the Masked Rider series having no canonical effect on Power Rangers, this three-parter is considered canon as Dex and Edenoi would be mentioned again in "Alien Rangers of Aquitar, Part 1".
- The ending credits to Parts I & II uses footage from the Green Ranger Kata Video special while Part III's credits uses a 30 second cut-down of Bulk & Skull's faux-Ranger revelation moment from earlier in the episode.
- Even though this is a Season 3 episode, and Rito Revolto is listed in the end credits despite not appearing until the next episode, it has the style of the second season because of the opening, the morph, and the zords, all of which are from Season 2. The style of Season 3 begins in the next episode.
- In this episode the Thunderzord summoning sequence is replaced (for the first time since being introduced) with original footage.
- The White Tigerzord is explicitly referred to as a Thunderzord in this episode.
- This episode marks the last time Lord Zedd conjures up a grenade and tosses it down to Earth to make his monsters grow. Starting in "Ninja Quest" and onward, he and Rita would cross their staves emitting an electrical storm to grow their monsters.
- The background music by the Tel Aviv Symphony Orchestra, Udi Harpaz and Shuki Levy originally recorded for Masked Rider would later be reused in the first 3 seasons of the Saban English dub of Digimon as well as Digimon: The Movie, throughout Digimon Adventure and Adventure 02, and very little of Digimon Tamers.
- This is the second time that the Zord battle consists of American filmed footage since "Best Man for the Job".
- The footage of the Edenites from Kamen Rider Black RX seemed to show them with antennae.
- When Dex and the other Edenites were digging, Dex called his Lexian by his regular name instead of "Grandfather".
- Billy seemed to be surprised that Alpha, a robot, sounded sad however Alpha had shown capacity for humanlike emotion many times previous to this and after this.
- The Rangers couldn't see the Spiderbase firing on them despite it being in Edenoi's atmosphere (and actually relatively close to the ground) at the time.
- One of the Edenites was surprised that Billy knew the surface was being disrupted, despite this being plainly obvious.
- Before Dregon told Double Face to fire again, a small shot of Masked Rider on an airport runway at night can be seen. This is from the ending theme of RX.
- Footage of the Spiderbase constantly showed it flying away from a grey planet/moon.
- Repellator's destruction seemed to create an unusual large amount of smoke.