Darth Vader has his sights on a massive source of kyber located right in the Emperor's secret base! But in stealing one of the galaxy's most powerful and dangerous materials from right under the nose of his ruthless master, has the Dark Lord of the Sith bitten off more than he can chew? Meanwhile, Sabé is on the hunt for Luke Skywalker ... but, knowing that the Emperor himself has the same target, will she reach the conclusion that the young Jedi is even more dangerous than Vader? Plus, the Schism Imperial reveal their shocking endgame--and the ramifications could hand Darth Vader everything he ever wanted!