While trying to fix the GroundBridge, Fixit accidentally opens a portal to the Shadowzone -- and releases the long-lost Decepticon Soundwave! But when Bumblebee gets sucked into the Shadowzone himself, can he help Fixit, Denny, and Russell take on a Decepticon who's way out of their league? Was Soundwave spending all those years composing his own sweet dubstep soundtrack? And what's up with Steeljaw's subplot? Join us this week for "Portals"!