The Hyperforce are racing against time as Mandarin and Valeena and a newly turned evil Sparx try to retrieve the Soul of Evil, which will help to bring back Skeleton King. Will they succeed and stop them? Will they save Sparx from the darkness? Or is all lost for Shuggazoom and the universe?

Chiro falls for a new girl, Jinmay, not knowing that she's a robot under the Skeleton King's control, but even Jinmay doesn't know it. Jinmay's monkey companion, Sakko, who was secretly a spy for the Skeleton King, took her to the Skeleton King's lair and then constructed her to be evil. Then it's a showdown between the monkey team and an evil robot Jinmay, under the control of Sakko. Jinmay must remember the good memories with Chiro to get back control of herself, and then stop the evil Skeleton King.

Antauri, sensing a disturbance in the Power Primate, heads off to see the ones who taught him the ways of the mystical energy. Fearful that his friend may not return, Chiro stows away in the Brain Scrambler, and joins Antauri on his mission. But upon arrival, things start to go south as the monkey's master informs him that the "Dark Ones" have returned and that the Power Primate is deteriorating - and proves himself a traitor as well. Now Chiro must fight his way past the temple's guardians to get to Antauri and stop Master Zan. But could the Power Primate be coming to an end? Guest appearance: Michael York as Master Zan

Meet Gyrus Krinkle, a man who dreams of becoming part of the Monkey Team. But when Chiro turns him down, he realizes it's time to take matters into his own hands. Krinkle hatches a scheme to make himself leader of the monkeys - whether they want it or not. Guest appearance: Jeffrey Combs as Gyrus Krinkle

Just as Chiro is beginning to understand the mysterious Power Primate, an enormous planetoid known as Q is detected headed straight toward the planet. Gibson's plan is to fly up in the Super Robot, and blast Q with Otto's newly completed gravaton disrupter. Simple, right? Not quite. Imagine the team's surprise when they discover that the giant planetoid is actually a living, speaking space creature! Their only hope is to be swallowed by Q, and disable the propulsion unit within it. Unfortunately for Chiro and the monkey team, this task won't be as easy to carry out as it sounds.

After a narrow victory against an eye creature, Antauri tells the monkeys to create new techniques by tomorrow. Chiro stumbles upon a monkey helmet and monkey glove which makes a shield. Antauri tells him of the original leader and that the glove used to belong to him. Meanwhile, in space, a strange creature finds the other glove, and brings it to the Skeleton King. He is then revealed to be an orange monkey named Mandarin, the original leader of the Hyperforce. Guest appearance: James Hong as Mandarin

Skeleton King plants an eye monster in the waters of Shuggazoom. The monster grows, then attacks all the citizens. When someone look into its gigantic eye, they become mind-controlled zombies. It also controls Sparx, Gibson, Nova and Otto! Only Chiro and Antauri, and two other kids, BT and Glenny resist the spell only for Glenny to get attacked and bitten by Otto and Nova, while Antauri and BT looks into its eye turning them into zombies. But soon enough, Chiro is the only one left. Can Chiro stop the monster and save all the citizens of Shuggazoom along with their monkey comrades?

The Monkey Team is finally able to talk to the citizens of Shuggazoom! Now with this new ability, they've decided to let everyone in on the true danger that surrounds them - the Skeleton King threat.

Still on their journey, Gibson's lecture on wormholes is interrupted when an alien robot mech unexpectedly attacks the Super Robot. The Monkey Team fights back, only to lose Gibson during the battle. Stranded on a strange world, the blue monkey finds that he is not alone - also stranded is a member of the team whose mech attacked them. At first it seems the two will never get along, but when a new enemy arises, can they work together to save their teams - and themselves? Guest appearance: Aaron Ruell as Suupa

The Monkey Team runs into an old enemy, Gyrus Krinkle, at the prison on Ranger 7 when Chiro is mysteriously kidnapped and the monkeys must find him.

Finding themselves trapped within the Worm, the Hyperforce struggles to regain their composure after the day's past events. This doesn't keep them from their mission, however. As Antauri sets out, Sparx, Gibson, and Otto deal with the Skeleton King Droid. All the while, Chiro, separated from his teammates finds out that an old foe has survived within the Dark One's digestive tract and is plotting his vengeance. Is all lost for the Monkey Team? Dark One Worm aims to attack planet Earth.

The monkey team picks up a stranger called Captain Shuggazoom. He was the former protector of Shuggazoom and the Alchemist's friend. Will the monkey team finally learn the full truth of their creator? What happens if something dangerous is also awakened along with Captain Shuggazoom? Guest appearance: Bruce Campbell as Captain Shuggazoom

Responding to a distress call, the Super Robot crash lands on Soturix 7. To make things worse, an energy field around the planet has shorted out the robot, Chiro's powers, AND the minds of the rest of the Monkey Team! Now Chiro must brave Skurgg's sadistic games, survive the desert, and reclaim his friends... and his only hope is to connect with the Power Primate on an entirely new level. Guest appearance: Wil Wheaton as Skurgg

After all that has happened, Chiro, now in a strange new form, discovers a whole new world beneath Shuggazoom's surface. As the remaining Monkey Team member Jinmay search for him, he's on a search of his own... for Antauri. Well, he wants to put Antauri's power primate in the silver monkey suit. When the others finally find him, all they want is for Chiro to come home where he belongs. They are unaware of the greater journey that lies ahead. Guest appearance: Hynden Walch as Valeena

In order to revive the insidious Skeleton King, Valeena the Skull Sorceress must find three sacred items that represent her master's soul. Learning of this, the Hyperforce and Jinmay set off to find these items before the sorceress does. But getting hold of these items are easier said than done since they might contain more than just power...

While still on the hunt for the Dark One Worm, the gang is pulled into a massive spaceship by an Artificial Intelligence whose colony was destroyed by Skeleton King, and is now bent on destroying anyone who has something organic. And on top of that, it separates Antauri from the others. Will the Hyperforce find Antauri and beat this A.I. with the aid of the Super Robot which is suddenly displaying an intelligence of its own...? Guest appearance: S. Scott Bullock as the Super Computer

It's hot in Shuggazoom City. Very hot. So the monkeys decide to cool off with a swim, and everyone seems excited; except Sprx-77 and Chiro. But the water begins to rise, and soon floods the city. On a rescue mission, Chiro's fear holds him back once more, and no doubt would he have drowned if the team had not saved him at the last minute. Deciding to get to the source of the problem, they plunge down to the deep depths of Shuggazoom's water base, to find that the pillars holding everything up are terribly corroded. And the massive dents look oddly like teeth marks...

It was just an ordinary day of training - until Chiro's head blew off! It turns out to be a Formless clone, and the monkeys are on a wild chase around the city to find the real one. Meanwhile, the real Chiro is held hostage at Mandarin's fortress. It won't be easy to escape - there are deformed clones at every corner! Can the monkeys rescue Chiro in time?

When the Shuggazoom is attacked by aquatic monsters, the Hyperforce are saved by Captain Protesus. He tells the team that the monsters are only the beginning and an ancient demon entombed deep under the sea will awaken by the next dawn. Only the black crystal from the Hostile Depths can save them. But does the Captain want to stop the ancient monster or release it? Guest appearance: John Rhys-Davies as Captain Proteus

On patrol of the city, Sparx detects a strange force nearby. Chiro is eager to watch his favorite TV show The Sun Riders, so the magnet-fisted monkey insists that he go alone. He hasn't gone far when the other monkeys realize he's disappeared, and they can't contact him in any way. They set out to find him, and after a bumpy ride in the Super Robot, they find themselves stranded in a wasteland of junk, occupied by Lord Scrapperton, a man who has "upgraded" all of his human parts to make himself fully robot. But this guy seems way too happy - creepy happy - and Chiro is suspicious. He keeps the cybernetic collector busy while the monkeys search for their friend. Guest appearance: Eric Idle as Scrapperton

In hot pursuit of the Dark One Worm, the Super Robot is mysteriously transported to a strange village where everything is, as Otto puts it, "spook-tacular." The citizens turn to the Monkey Team for help, claiming that they are plagued by a curse that is taking away their little ones. Nova knows it is not true literally But what secrets are these strange people really hiding? Trivia: This episode is Halloween-inspired, despite the fact that it aired before Halloween. Guest appearance: Angus Scrimm as Magistrate and Cassandra Peterson as Severina

The time has finally come - the final showdown with the Skeleton King Worm. Armed with explosives and a plan, the Hyperforce readies to face what could be their last battle. But the plan falls apart when the team loses Nova to the Worm...and is dragged through a wormhole to what seems to be a whole other dimension. Can the remaining members of the Hyperforce gets back to normal and defeat the Worm...without Nova? Guest appearance: Jim Cummings as The Being

While patrolling the city, Sparx crash lands the Fist Rocket 3 in front of the Super Robot. When they rescue him they find he has lost his sight. Then Gibson turns into a drooling insane idiot, Antauri starts to lose control of his body and Mandarin takes control of his mind, Nova starts to see scary hallucinations, Chiro turns into a little boy, and clam monsters chase Otto. Who could be bring their phobias to life and will the monkeys stop who ever's behind it?

With the monkeys always beating the Formless before he does, Chiro is starting to feel a bit useless. After a failed attempt to catch the creatures before his teammates did, he discovers that the citizens of Shuggazoom City have mysteriously disappeared. And a trip inside a weird elevator with no buttons leaves Chiro imprisoned in a massive pit. But with the help of the Power Primate, he is able to call the team. They come to him rescue, only to be captured as well. Can the Hyperforce rescue the citizens of Shuggazoom from the Pit of Doom? Will they defeat Elevator Monster.

After saving a small abandoned creature from an avalanche of rocks on Shuggazoom's moon, Ranger 7, Chiro takes a liking to the little guy just like Chloe, much to Gibson's dismay, adopts it until they can find its true home planet. At first Chiro has a blast with Thingy, until weird things start happening. The Super Robot's functions go out of whack, even dumping Gibson into deep space. It seems as if Thingy is to blame, but it turns out that a virus created by the Skeleton King is making the Robot fall apart. To make matters worse, the virus has infected Gibson, transforming him into an evil mutant minion of the Skeleton King! Guest appearance: Frank Welker as Thingy