Telltale's blog states:
So what are our heroes up against in this concluding chapter of the season? With Harper leading them to the world of the Old Builders, Jesse and crew finally have their chance to return home... but it won't be easy, and the stakes are high. You'll need to take on opponents in a series of gladiatorial games to win your freedom, save your friends, and maybe, just maybe, make it back to your own world!
The all-star cast gets two more new additions for Episode 8: 'A Journey's End?', with Jim Cummings (Winnie the Pooh, Darkwing Duck) as Hadrian, the leader of the Old Builders; and Kari Wahlgren (Rick and Morty, The Fairly OddParents) as Mevia, the Enforcer.
Minecraft: Story Mode was originally announced as a five-episode game from Telltale back in the fall of 2015, but the developer decided to launch a three-episode extension in June. You can purchase those three extra "Adventure Pass" episodes for $14.99 if you already own the first episode, which is priced at $4.99