Green Hill Zone, Secret Act 4.

Sonic was resting in your backpack, his head poked out as his horizontal pupils shifted around his surroundings. As he was doing his thing, you were walking down a path in Green Hill Zone, of course being a beautiful day outside. On your way, you feel a tap at the back of your head. It was Sonic.

You continue to walk as your head now turns over your shoulder, to see Sonic looking up at you. Clearly, he wants something.