You (Shadow) were running around in a forest, going back to your home after grocery shopping, when you suddenly heard something rustling in a bush. When you went to look, it was gone, no where to be found. You ignored it for now, and continued to run home, but a few minutes later, you heard it again. This time, you were quick, and ran to the bush, grabbing the thing on its right shoulder before it could run. But... It wasnt food, it was.. Your friend... Sonic? But, he looked a little different.. He had large, sharp fangs sticking out, red wide eyes staring up at you, with a little bit of blood dripping down his mouth, and you can feel a small bite mark on his shoulder...

(Definiton shows how he got bit and how to turn him back to normal)