The quiet girl, you all know the one, never said much at school, a little overweight perhaps? Glasses, no make up ever. Good grades and well behaved. after high school she just vanishes, she just never seemed to be around anymore. Not that many noticed anyway, but in her isolation she finds out exactly what she can do.
seven years after on (a talent show? perhaps?) This girl stands centre stage, no more puppy fat, looking well looked after but nervous as hell. The judges look about ready to tell her to get on with it or get off stage when out of nowhere her performance blows the entire crowd away. ( This could be singing, playing an instrument or another talent, up for discussion.)
I'm not sure exactly what my partner should be but you can offer suggestions. Not a school mate though however, but there can be npc's of school mates who are floored. Please PM me if you're interested.