In the rubble of the destroyed Command Center, the Power Rangers find the Zeo Crystal.

The Rangers face their greatest challenge as Zordon explains that King Mondo is preparing to invade the Solar System, his final link in a chain of galaxies he already controls.

When Mondo and Machina unleash the Staroid on the Zeo Rangers, they are forced to call on their untested Zeo Zords.

The computer software that Rocky, and his new friend Jennifer are working on, is stolen by the Cogs and used against the Rangers.

Tommy and Katherine take care of a baby for a school assignment giving King Mondo an idea for his evil ambitions.

The teens' baseball team provides the perfect outlet for Prince Sprocket to do battle with the Rangers when he turns their batting machine into the People Pitcher.

Smokey, a specially trained dog, aids the Zeo Rangers in fighting Digster, Mondo and Machina's latest monster.

When Ernie brings a puppet show to the Youth Center to entertain the children of Angel Grove, Mondo and Machina hatch a plan to control the children's minds, by planting a transmitter on the Puppet Man.

Prince Sprocket recruits the Rangers to be in his own twisted movie; "Invasion of the Ranger Snatchers."

As Billy learns he has accumulated enough credits to graduate from Angel Grove High, Cestro, the Blue Alien Ranger, lands on Earth seeking Billy's help.

As Rocky and Adam work on developing hybrid plants for Botany class, Rocky's plant exhibits weird behavior, growing rapidly and developing an appetite for metal.

A mysterious musician in Angel Grove High is pursued by Prince Sprocket and King Mondo.

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.

As Billy is returning from Aquitar in a space capsule, Machina and Mondo attack his space craft, sending it into the gravitational pull of the Machine Skybase.

Tommy receives a "Dear John" letter.

Mondo and Machina send the Defoliator to create a greenhouse effect in Angel Grove.

As Katherine tries to console Tommy about his "Dear John" letter from Kimberly, a spark of attraction begins to form between the two Rangers.

On a journey to find True of Heart, Tommy comes upon the incredible discovery of a young man who looks just like him.

Searching for the other half of an arrowhead, Tommy discovers its owner is his brother.

Having kidnapped Tommy's newfound brother David, King Mondo blackmails Tommy into giving up his half of the arrowhead, in order to set David free.

Now that he has both halves of the arrowhead, King Mondo vows to destroy the Zeo Rangers, while continuing to refuse the release of Tommy's brother.

King Mondo sends down the Defector robot to trick the Zeo Rangers into gaining their trust, and thereby able to destroy them.

Adam experiences a nightmarish scenario when the Machine Empire invades Earth overnight and transforms many of Adam's friends into sinister scientists, werewolves, and dark forces.

Bulk's infatuation with the daughter of a high ranking officer soon puts both his, Skull's, and Lt. Stone's careers in jeopardy.

Tanya's potential new singing career divides her time between fulfilling an ambition and serving as a Ranger

King Mondo attempts to rule the Earth's waterways by building a fleet of ships under an invisible field.

King Mondo's plan to divide and conquer the Zeo Rangers is spoiled by the appearance of the Gold Ranger.

The other Rangers must find a way to help their friends when Prince Sprocket shrinks Tommy and Katherine and places them in a terrarium with a hungry spider.

Katherine competes in a surfing competition, but faces danger when the Leaky Faucet monster puts toxic Cog oil in all the water in Angel Grove.

The Somnibot casts a sleeping spell on the people of Angel Grove, leaving it to the Gold Ranger to break the spell.