Zentrix

Quantum is serious damaged by OmicronPsy, realizing that he's not going to survive, gives Zeus his Zentrium and dies. Zeus puts the second Zentrium in his own body, transforming him into "Ultra Mode." He now has a greater chance to win, but he can only fight so long because the second Zentrium will make him overheat all too soon. Megan must push him and OmicronPsy into the time machine and send them elsewhere in time. Can Megan defeated OmicronPsy finally?

Megan and Nick are losing ground as they fight off OmicronPsy's huge fleet of flying robots until Zeus comes to the rescue. Megan enters the Space-Stronghold to try to turn off the last Zentrium. Inside the stronghold, HellTank, Blade and Fighter battle against Dark-07 and Dark-08. Quantum fights Silver-General in a fierce battle. Zeus joins him. They finally destroy Silver-General. Lurking inside the stronghold, OmicronPsy is enraged to see that Silver-General is dead. He declares that he now has nothing to live for, and he prepares to exact revenge upon Megan and her party.

With Dr. Coy and Dr. Roark away from Dr. Coy's lab, Silver-General launches a three-pronged attack on Megan's party. First, she creates an image as a decoy to keep Zeus and Quantum busy. Second, she sends humanoid characters to attack Megan, Nick, and Akina. Third, she penetrates the heart of the lab to destroy all its vital robot-repairing machinery. Zeus and Quantum fight the decoy image while Fighter helps save the kids. Nick realizes that Zeus and Quantum are fighting an illusion and sends them to rushing to the lab, but it's too late: the lab explodes. Silver-General escapes and makes for the Space-Stronghold, where she plans to meet OmicronPsy.

Mango is sick, but recovering at Dr. Coy's lab. Dr. Coy gives Zeus a rocket kit to double his flying speed in the upcoming battle at the Sky-Stronghold. Dark-General arrives at the Sky-Stronghold to find Quantum defending it. When Zeus arrives, he and Quantum beat Dark-General once and for all. Meanwhile, Megan shuts off the Zentrium. Unfortunately, OmicronPsy now has all the data he needs to complete his plan to live independently of the Emperor's Zentrium. Quantum is also gravely injured, but he refuses to return to Dr. Coy's lab for help.

Setting off in search of the Snow-Stronghold, Megan slips off a cliff and is saved just in time by a penguin tribe. These fun-loving penguins press Megan and her pals into playing games with them, and only if Megan wins will they tell her the location of the fifth Zentrium. Megan can only go along with them. As she has lost contact with Megan and her party, Akina sends Fighter and King to lend support. On their way, they are attacked by Giant-Robot and Silver-05. Meanwhile, OmicronPsy has devised a new plan that will enable him to survive even if Megan shuts down all the Zentriums. However, there's still a fatal flaw in his design, so he recruits Dark-General to be his unwitting guinea pig.

When the newly fixed Quantum leaves Dr Coy's laboratory, he wanders aimlessly trying to rediscover a sense of his own value, until he encounters Webster the BirdMan. Now that Megan has an alliance with the BirdMen and that Zeus is back on board, things are looking up! The only trouble is that the entrance to the Volcano Stronghold is also the site of the sacred image of the RockMan. Thus, not wanting to damage their credibility with the RockMen, Megan and Nick decide to enter the Volcano Stronghold directly via the mouth of the volcano itself. Finally, as Zeus and Dark-04 battle it out, Megan succeeds in shutting down the 3rd Zentrium.

Since the explosion at the Undersea Stronghold, Nick realizes the wounded Megan really cares for Zeus. He asks Dr Coy if he could make a replica Zeus, but is told that because Zentrium chips are 'thinking' chips, any replica would not be identical and would have no memory of Megan. [unknown to Megan, we then see that Zeus is OK.] Meanwhile Dr Coy tells Megan that if they can find Zeus' Zentrium, then they can rebuild him. Megan is happy at this news. Megan, Clump and Morph take over from Nick in the search for Zeus. Back at Zentrix, OmicronPsy is enraged to realize that Quantum and Dark-02 probably bought it [but we see that Quantum survived the explosion]. He orders Dark-04 and Silver-03 to go and mount guard at the Volcano Stronghold, where Silver-03 then encounters the RockMen who live in the vicinity. The RockMen put up a fierce resistance to Silver-03 Megan and Nick prepare to set out for the Volcano Stronghold. Dr Coy gives them Fighter to ride shotgun.

Dr Coy and Akina work together on a new suit of water-resistant armor and other weapons for Zeus. Zeus tests them successfully. Akina fixes King and Fighter. Megan and her partners, with King and Fighter, prepare to return to the Underwater Stronghold. But so does Quantum/Dark-01. And OmicronPsy not only deploys Dark-03 but also booby traps the Zentrium. As they near the Undersea Stronghold, they encounter Silver-01 and the deadly mini-bots. A huge battle rages. Silver-01 is destroyed. Megan's sub has a few close shaves but makes it to the stronghold, from which Dark-02 suddenly emerges. Zeus engages him while Megan enters the stronghold. Dark-03 also appears. A major rumble takes place with Dr Coy and Akina controlling King and Fighter on manual, and eventually, just as Zeus is engaging Dark-02 in a fight to the death, the once-eaten Quantum appears again.

A mysterious girl called Akina, who is actually Dr Coy's daughter, arrives with her robot, Fighter. He is an expert at Chinese-style kung-fu, and absolutely loathes Dr Coy. But before he can challenge Dr Coy, he must defeat the Chubby Brothers' robots. After Fighter has beaten their robots, The Blade and Hell Tank, he issues a direct challenge to Dr Coy. But Dr Coy insists that he beat Zeus first. So Fighter and Zeus fight it out until Zeus prevails. Dr Coy's then however insists that Zeus fight his robot King before he will agree to fix Zeus. The two robots clash and eventually Zeus wins when King loses one of his robot arms. Dr Coy keeps his word, and pledges himself to Megan's cause.

At Nick's laboratory, Megan tells her story to an incredulous Nick and then makes contact with Dr Roark who helps her restore Zeus to his full powers. In order to repay Nick for rescuing them, Megan decides to help him destroy the Monster that killed his father. His powers now fully restored, Zeus' CPU replays the encounter with the Monster for Nick to see. Nick outlines his plan to annihilate the Monster with the aid of some of his crackpot weapons. After lying in wait for it, Zeus avenges Nick's father by slaying the Monster. Nick then teams up with the trio and they all set off for the second Zentrium, located in the Underwater Stronghold. As well as sending Dark-02 into the attack, OmicronPsy also instructs the robots Silver-01 and Silver-02 to set up a defense shield. Driving forward, Megan orders Zeus against the shield. It injures Zeus and forces Megan and her cohorts to retreat.

At the Pyramid, when Dr Roark explains everything to Megan, she decides to complete her father's mission. To knock out OmicronPsy completely, Megan needs to shut down altogether six Zentriums. When she shuts down the first, at the Pyramid, OmicronPsy flies into a rage and sends Dark-01 (Quantum) after her. There is a huge robot fight, but in his powered-down state, Zeus is no match for Dark-01 and retreats with Megan. Dr Roark tells Megan and Zeus how to escape from the Pyramid. But, as they do so, again they are discovered by Dark-01. Eventually Megan and party are trapped in a chamber with no exit.

At Zentrix, OmicronPsy repairs the time machine and speeds up the development of the Dark-Series robots. His first product is Dark-01, the brainwashed Quantum, who pledges to defend the Zentrium against Megan! In the forest, the Peachi-wigis tell Megan that Dr Roark has sought refuge in the Pyramid. Megan makes friends with them all immediately and goes off to play with them, leaving Zeus while his data uploads. While playing, Megan encounters robot-assassin Dark-Alpha. Zeus, his systems restored, comes to Megan's rescue, and eventually Dark-Alpha is destroyed. Back at Zentrix, OmicronPsy deploys the Dark-Sphere robot to patrol the Pyramid.

Megan and Mango arrive back seven years in time. Due to a time machine malfunction, Megan has become a 15-year old in an 8-year-old body. Then she stumbles across Zeus, the super-robot her father built to help him destroy OmicronPsy. Trouble is, most of Zeus' functions have been in 'sleep mode'. Meanwhile, OmicronPsy uses the time machine to dispatch Stinger Bugs to assassinate Megan. Despite his 'weakness', Zeus manages to defend Megan and Mango from the Stinger Bugs. Zeus then detects some weak signals coming from somewhere and which may be transmitted by her father. They set off in search of them. Back at Zentrix, OmicronPsy sends Dark-Alpha to attack Megan.