The Freedom Fighters are in the Hill Top Zone when they are suddenly interrupted by an invasion by a group of Penguinator Badniks. With some effort, the heroes beat the Badniks, but Sonic is confused as to why the Floating Island Badniks were on Mobius. Porker Lewis directs Sonic's attention to a massive portal to the Ice Cap Zone, from which more Penguinators are pouring out. The fight begins again, but Sonic wishes to tackle the source and hops through the gateway. In the Ice Cap Zone, Sonic finds Knuckles the Echidna fighting more Penguinators and Star Pointers and joins in. After an argument, the make a temporary truce to help each other destroy the technology responsible for the portal, unaware that Doctor Robotnik is watching them.