When even Kord can't find a way to fix what's wrong with the new upgrades to the Shane Gang's Mecha Beasts, it's time to go to the source: the wondrous Mecha Forge!
The Slug Run is the ultimate, off-road, no-holds-barred, cross-cavern Mecha Beast race. Unfortunately, the only thing lower than the odds of beating the three-time champ who's now racing for Dr. Blakk are the odds of Eli making it to the finish line in one piece!
When the punks in the Hooligang cruise into Quiet Lawn Cavern, they think no one there's got the guts to stand up to them so they trash the place.
After the Shane hideout is ransacked, the gang trades in one of Eli's prized slugs for new gear. When Eli has second thoughts they go back to get it, only to learn that it's been sold to Dr. Blakk, along with hundreds of others to be transformed into feral Ghoul Slugs. Eli refuses to let his slug or any other get ghouled, so the team breaks in to Blakk's fortress to free them. While inside, they learn of Blakk's plan to conquer Slugterra.
Now its Eli's turn to be Slugterra's next Shane, whether he's ready or not! Unfortunately, the slugslinging tournament he enters to prove that he's ready, pretty quickly shows that he's not!
When the Shane Gang arrive at a cavern overrun by thieves terrorizing the good townfolk, they decide to use Pronto as bait, hoping the thieves will eliminate each other as each strives to be the first to capture the valuable molenoid-the only one the Eastern Caverns have ever seen. However, their plan goes awry when Underlord Holt arrives and commands the thieves to work together to bring him Pronto-dead or alive!
The time has come for Eli and the Shane Gang to accompany their new friend Junjie home to the strange and beautiful Eastern Caverns. But when they arrive, they are shocked to find a world darker and more dangerous than Junjie remembers. The sinister Emperor's henchmen have pillaged every cavern of its slugs, and without the slugs' energy, the Eastern Caverns have fallen into ruins. The stolen slugs are locked away in the heart of the Emperor's evil dominion, the imperial palace.
The Dark Slinger and his marauders have invaded Slugterra! But there's more to this new threat than meets the eye. Eli must fight a very different kind of duel to save Slugterra...and himself.
Eli and the Shane Gang have vanquished Dr. Blakk. But a new threat emerges from beyond the 99 caverns.
Dr. Blakk has succeeded in creating a gap in the magical slug-energy barrier that protects Slugterra!
Dr. Blakk and his Darkbane minions have discovered a way to make their ghouls faster and stronger - giving them an edge over the Shane Gang.
The Shane Gang defend the perimeter from the legions of Blakk Guards sent to free Dr. Blakk from prison.
Dr. Blakk has been captured! Now it's up to the Shane Gang to transport him to Stalagmite 17, the only prison that can hold him.
Eli has added some awesome new slugs to his arsenal: the Elementals. But the Elemental Slugs are ancient, extremely powerful, and temperamental, and Eli can't control them. Junjie, the newest member of the Shane Gang, has the solution: Eli must learn Slug Fu, the ancient form of slugslinging that Junjie mastered in the Eastern Caverns. Slug Fu is the art of guiding and controlling a slug in battle, a skill that only the greatest slugslingers can master.
A mysterious creature is draining the energy from all the slugs in a distant cavern, and the residents are offering a rich reward to whoever can stop it.
Our heroes are lured into an elaborate game by a twisted villain.
The Shane Gang follow Diablos Nacho to Molemound - the Molenoid home cavern. Pronto doesn't want to go - and not because he's in trouble.
The Shane Gang's been captured by the zombifying Mr. Saturday! Locked up in Stalagmite 17, they are helpless as Dr. Blakk begins the trip there to collect them.
The four members of the Shane Gang think they've found the fifth in Twist, a street-smart kid who volunteers his help when the gang needs it most on a mission gone wrong.
A fun trip to the mall cavern turns un-deadly when the place is over run by the zombie-like victims of the Zombus slug.