Tom and Kaz are captured by Maxxor in their search for Reggie, and Tom and Maxxor must overcome their distrust for each other for their own survival, against the Mipedians.

With the M'arrillians defeated, the Allied Tribes celebrate the new spirit of unity by staging a race through Perim. Though it's supposed to be a friendly competition, it quickly becomes clear that each Tribe wants one of their own Creatures to win... at any cost!

Both Tom and Kaz have six wins in the Imthor Drome so Tom surprises Kaz with a Drome challenge with the winner going on to face CodeMaster Imthor. However, when Kaz accuses Tom of cheating and Tom admits to it, CodeMaster Imthor bans Tom from Chaotic Battles while it is investigated.

Tom and Kaz head to Castle Bodhran in Perim to recover Reggie's missing Scanner, but Tom finds himself wagering his prized card Maxxor in a Challenge Match.

Tom camps out at Lake Ken-I-Po to obtain a scan of Najarin, and decides to track the creature, leading him to a pack of UnderWorld raiders.

Kaz is summoned to a secret meeting by Chaor, lord of the Underworld, and is ordered to do battle with a Chaotic player who has a Lord Van Bloot card when the real Lord Van Bloot plans to stage a revolution against Chaor.

Tom and Kaz go on a topsy-turvy adventure when they look for Sarah and Peyton in Kirvak Mound. They soon discover that the effects of Kirvak Mound has deaged Sarah to a little girl and aged Peyton to an old man. They now have to evade prehistoric creatures to find their way back. When they look for Sarah, they find other portals leading to various points in history which would lead to various futures.

After Sarah is captured by the Danians, Tom, Kaz, and Peyton embark on a rescue mission to save her only to be captured themselves.

After seven victories in the Crellan Drome, Tom is challenged to another match by CodeMaster Crellan. In preparation for his match, he scans Mugic that he is tricked by Klay and Krystella into believing it will double his power, but it really switches their stats. Can Tom overcome this bump in the road and defeat CodeMaster Crellan?

Tom ports to Prexxor Chasm, the Location scan he won after defeating Codemaster Krellan. When he does get a scan of its bottom and faces off against Peyton, both of them have an encounter with a slimy thing that's not even a creature. A thing that has Smildon and the other inhabitants of Prexxor Chasm frightened.

Kaz gains a new scan that is actually two creatures in one - Borth-Majar. Soon after, he finds himself using Borth-Majar in a match and must master controlling two creatures as one.

Tom's match against Crellan continues. He manages to defeat Cromax several times, only for him to keep coming back. After Tom finds the reason for this problem in the form of Ariak, the battle comes down to Maxxor vs Cromax. At that point, Klay and Krystella's little trick becomes Tom's trump card.

Tom and Kaz face Klay and Krystella in a four-way match after trying to scan the Phobia Mask.

After Tom and Kaz defeat Klay and Krystella, the two try to back out of the deal but encounter a creature known as Opto.

When Kaz and Peyton's 'friendly' squabble spins out of control, Tom decides the only solution is a 'Scavenger Scan' match. Kaz and Peyton have one hour to scrape up all the scans they need for a match. The clock is ticking as the desperate duo speed through Perim, scavenging scans and dodging danger – then it's off to the BattleDrome for the most chaotic Chaotic battles ever.

Peyton leads the other to a hidden location on a map that he received that will lead him to a creature called Iparu. However, Rothar has secretly followed them.

Confusion turns to shock for everyone when Krystella's "goody-goody" twin sister Jycella comes to Chaotic. And when their sibling rivalry erupts, Klay suggests a novel way of settling them: a Chaotic match.

Tom agrees to use the very weak Bodal in his next match, putting him in serious jeopardy.

Peyton and Krystella clash in battle while Sarah tells Tom of the Overworld heroine Intress.

Kaz tags along with Tom hoping to get a new scan of his hero, the mighty Maxxor. Their quest takes the two friends across Perim, where they are caught in the crossfire of a volcanic battle, then brave a treacherous trip through the ghastly Gloomuck Swamp. As Tom and Kaz close in on their goal, they are shocked to learn that the greatest peril they face is Maxxor himself!

Sarah needs a Song of Mandibloor, and has Tom, Kaz, and Peyton Trading and trekking in both the real world and Chaotic to get her the cards she needed for a long trade sequence to get the mugic.

When Tom agrees to a match with Klay. Krystalla tells Klay of Tom's strategy before Klay faces him, and Klay uses the Flux Bauble to cause major problems for Tom in the match.

Tom rescues a player in the wilds of Perim and battles him to gain some tips, finding that the player is actually a CodeMaster.

Peyton wants to trade Mipedian creatures for Tom's scan but Tom declines as he distrusts them after what happened with Reggie and Mudeenu. He says Overworlders are better so Peyton takes him to the Mipedian desert. Tom's opinion changes when he and Peyton are attacked by an evil scorpioid Overworlder named Slruhk.

Kaz faces HotShot, a battler who specializes in fire attacks. To his surprise, he uses every tribe except UnderWorlders.