Doctor Eggman Robotnik (Mike Pollock) kidnaps Princess Elise of Soleanna (Veronica Taylor) in the hopes of harnessing the Flames of Disaster, a destructive power sealed within her. Aided by his friends Tails (Freddie Highmore) and Knuckles (Dan Green), Sonic (Jason Griffith) works to protect Elise from Eggman. Meanwhile, Shadow (Jason Griffith), his fellow agent Rouge (Kathleen Delaney), and Eggman accidentally release an evil spirit, Mephiles (Dan Green). The spirit transports the agent duo to a post-apocalyptic future ravaged by a demonic monster, Iblis. When Mephiles meets survivors Silver (Pete Capella) and Blaze (Bella Hudson), he fools them into thinking Sonic is the cause of this destruction and sends them to the present to kill him.
