"Freedom Fighters of the Galaxy - Part 2": Sonic's troubles in the alternate future version of Mobius go from bad to worse, as the harbinger of doom arrives -- and his name is Silver Snively. That can only mean one thing: his master, the incarnation of doom itself, can't be far behind -- none other than Robolactus. Can Sonic and the future Freedom Fighters stop this menace before he has a chance to erase them from the history books.