SKY CHASE ZONE
After defeating Robotnik he takes off to his Wing Fortress; the base in the sky This is pretty well defended by an amada of his Badnik's.
Sonic is stands on the wing of Tails' plane ready to fight what ever comes on. Be careful not to make any sudden moves and you'll fall off and plummet to your doom.
The course takes flies over Wing Fortress to see what's coming next…