Slugterra Season 4 Episode 2 Into the Shadows: The New Boss (2) ( Air Date 2016-10-11 ) Genre Action & Adventure, Animation, Comedy, Sci-Fi & Fantasy, Family category. Overview "The Shane Gang takes Tad under their wing, training him to become a great slugslinger with Eli's old blaster. Their training is put to the test when the Gang brings Tad to answer a distress call that leads to a showdown with the Scrap Force and the Shadow Clan.".