Months after Johnny Lightfoot's heroic sacrifice, Sonic, Sally, and the Freedom Fighters are left grieving. They've won their first battle against Dr. Robotnik, but at the cost of their best friend's life. As they meet fellow Mobians who were close to Johnny in life, Robotnik returns with a vengeance, this time enlisting the help of the warrior known as Knuckles the Echidna. But as the Freedom Fighters prepare for battle once more with all-new allies by their side, Robotnik may have much more planned than any of them may realize.
