It's birthday time in Mobotropolis as The Freedom Fighters celebrate Sonic's sixteenth birthday. Sonic, Tails and Nate Morgan return to Mobotropolis in an attempt to return un-noticed. But with a new danger on the horizon, not everything is spelled with "happy." Another satellite over Mobotropolis activates, Snively takes charge, meteors rain on Sonic's parade, plus many, many more surprises. Will our heroes make it to the party on time? This one has "Surprise" written all over it. Don't miss the excitement-filled episode as we witness "The Surprise!"