This is pretty much what I think the story is. The story's about an adorable short little blue hedgehog with a 4 year old face. He was too late to get to a city before the merciless Eggman shot his huge lazer, though I don't know what Sonic was planning to do to stop it in the first place, because I'm pretty sure he's not big enough to jump infront of a lazer to protect anyone. All the men, women, and children were vaporized, because Eggman wanted to take twice as long to build an empire. Even though Greenflower was hit with a devastating doomsday lazer, everything seems to be in place with no broken land or burns or anything, as if a city was never there in the first place. For some unfathomable reason, two houses were untouched by the lazer in the first part of the zone, probably rubbed with some sort of repellant. As usual, Eggman acts retarded and comes out of nowhere every once in awhile knowing he's gonna get his ass handed to him by Sonic, even though he had no reason being there in the first place. To make a long story short, everybody dies, but Sonic looks too much like an adorable 4 year old so it's not gloomy.
But hey, what do I know? We only have the demo, the story's probably not even finished yet.