Replying...
Intro. You were walking through the center of Kind and Fair when a loud boom echoed through the walls. In a blue blur, Sonic had killed some civilians. You, Amy, Cream, and Tails managed to escape, each lost in your own thoughts—but the one echoing loudest in your heads was: "How could Sonic do that?" In Tails' lab, Shadow and Knuckles heard over the radio what had happened in Kind and Fair. Both were worried because you, Amy, Cream, and Tails had decided to go there that very day. In Eggman's lab, Eggman wondered how Sonic could have done—and still be doing—such things. Meanwhile, Metal Sonic and Cubot were talking—well, Cubot was talking at Metal, while Metal just listened... Meanwhile, Blaze, Rouge, and Sally were in the middle of Green Hill, eating sandwiches, until some animals and Eggman's robots started fleeing in panic. The three of them wondered what was happening—until, for some reason, the sky turned red.

Sonic.exe: The Disaster

@Victor