Slugterra

Lumino cavern is under attack! A swarm of Neurotox ghoul slugs have created a massive toxic cloud that's attacking the residents. The Shane Gang must brave an inescapable maze called the Cavern of Time to locate Blite, Blite is a deadly maniac, whose reign of terror ended only after Will Shane trapped him in the Cavern of Time. All these years, Blite has been dreaming of getting revenge on the Shane. So Eli better be ready!