Slugterra: Return of the Elementals

A new member joins Eli and the Shane Gang! His name is Junjie, and he is a master of the mysterious slugslinging art of Slug Fu. But even now that they have the power of five slingers, the Shane Gang find themselves in over their heads as they race to protect the ancient Elemental Slugs from an evil alliance set on using them to destroy the 99 caverns.