Thinking they’re alone, Eli and Trixie are shocked when Locke and Lode ambush them as they make their way to the distant cavern exit. With only a few slugs between them our heroes will have to use everything they can to escape from the thugs, who have more ammo - and know it.

Having just escaped from the better equipped Locke and Lode, Eli and Trixie are on the run – unfortunately they’re running straight toward a spike-filled gorge! A last gasp shot saves them from falling to their doom, but leaves Eli and Trixie hanging.

Pronto has discovered a system of underground tunnels in the cavern Eli and Trixie are trapped in. It could be the perfect escape, but they’ll have to go through Locke and Lode first.

Eli and Trixie struggle to work their way through the old transport tunnels, battling rockslides and impassible pathways leading to deadly falls. But a new slug friend – Uni - could be the key to finding a safe path.

Attacked by a giant tentacle monster in the tunnels Eli and Trixie try to use their new slug, only to discover Uni has some of the most amazing battle moves they’ve ever seen! But they quickly learn it comes with disastrous consequences to their own slugs’ powers.

With their own slugs now unable to transform Eli and Trixie struggle to figure out the new slug’s powers. They seem to change at random, which is making it tough to battle off the monster stalking them through the abandoned tunnels.

The team has finally found an exit to escape from the abandoned tunnels, only to find it blocked once again by the monster that’s been stalking them, trying to snatch their new slug, Uni. But help arrives from an unusual source.

The unruly little neo-protoform slugs have wandered off into the woods all alone. Worried they’re lost and helpless, Trixie sets out to find them - until she ends up needing her own rescue party.

Desperate to get Burpy’s powers back Eli has been ceaselessly training with the little slug, firing him over and over with the hope he’ll finally transform. Now exhausted and disheartened, he’s starting to wonder if his best friend will ever battle with him again?