Witness Knuckles' biggest challenge yet as he is taken apart molecule by molecule courtesy of the power of Enerjak! Behold the invasion into Echidnaopolis by Kragok and the Dark Legion! Add to this fracas Athair and the Ancient Walkers, Remington and the Echidna Security Team, Stryker and the Dingoes, as well as Sonic and the Freedom Fighters. But wait, there's more, as a villain from the not-too-distant past makes his move. It's all-out pandemonium in true Knuckles fashion!