Eli and the Gang find a way to take Junjie back home to the Eastern Caverns and discover trouble waiting for them when they arrive.

Upon returning to the Outlaws’ jungle camp, the Shane Gang suffer a sneak attack from the Emperor’s Underlord Holt, who steals almost all of their slugs and loads them onto the Dragon Train for transport to the Emperor. With precious few slugs to use as ammo, the Shane Gang must be extra resourceful to get them back.

In order to reach the Emperor of the Eastern Caverns, Eli and Junjie pose as Underlords to enter the Tournament of Underlords. But when Holt turns up to expose the Shane Gang, it's up to Pronto to stop him.

In a climactic battle, Junjie and Eli confront the Emperor and the Dai-Fu as the fate of the entire Eastern Caverns hangs in the balance!

While Junjie struggles with the knowledge of what he did during his time as the Dark Slinger, the Shane Gang meet a former servant of the Emperor who wants to turn over a new leaf. But can the Shane Gang help a bad guy learn to do good?

The Shane Gang decides to use Pronto as bait when they arrive at a cavern overrun by thieves. But their plan goes awry when Underlord Holt arrives and commands the thieves to work together to bring him Pronto - dead or alive!

When the Shane Gang travel to the Auroris Mine, they discover a legendary monster carved out of stone attacking the mines—the Pyritor. Trixie studies the legend to help them locate the creature’s home and put a stop to its reign of terror, but first they must confront the true nature of the beast, and its assistant!

Determined to up his game against Stone Warriors, Kord visits a famous Eastern Technician for help creating a new blaster upgrade. Building the new upgrade is difficult…but working with the Technician is practically impossible!

A winter-time holiday has arisen in the Eastern Caverns around the mysterious “Giver,” who makes an annual visit to deliver slugs to the people of the East. But when a group of thieves make off with the Giver’s precious cargo of slugs, the gang must ride to the rescue—and discover the secret of who the Giver really is.

Junjie recounts the ancient history of the Eastern Caverns and his ancestors, and the events that led to his downfall and transformation from the Eastern Champion to the Dark Slinger.

When Pronto accidentally uses the Emperor's sword blaster, he can suddenly do no wrong. Meanwhile, Lady Dai-Fu manipulates Underlord Holt into trapping the Shane Gang with a new superweapon: the Iron Warrior!

The Emperor sets to work creating Unstoppable Warriors to reclaim the Eastern Caverns. To make things even more difficult, a bounty is placed on Junjie's head, sending the Dai-Fu and hordes of the Emperor's Underlords after the Shane Gang.

Junjie, Eli and the Gang rally their friends in the Eastern Caverns—and even some of their old enemies—to help them take down the Emperor and all of his Unstoppable Warriors once and for all!