Slugterra - Season 4 Episode 1 Into the Shadows: Back on the Shane Gang (1)
8.3522 minutes
As the Shane Gang returns to the 99 caverns from their Eastern adventure, they find Gateway Cavern overrun with slugs. In the Shane Gang's absence, the Shadow Clan took a different approach to protecting the caverns, putting slugs before the needs of people and it's up to Eli and the gang to restore balance.