With the defeat of the Egg Emperor, Team Rose is finally reunited with Froggy and Chocola, while Team Chaotix make a startling discovery about the identity of their mysterious client. Meanwhile, Rouge breaks into Eggman's treasure room only to discover it is filled with capsules holding android copies of Shadow. <br /><br />As Vector interrogates Dr. Eggman, Neo Metal Sonic makes a grand entrance and it is revealed the robot is the real perpetrator of the recent events. Having collected vital data from all the heroes, Neo Metal Sonic undergoes a frightening transformation into a gigantic monster. The four teams must all join forces to stop the Metal Overlord once and for all...
