A 27 year old Russian scientist is taken against her will by the goverment and forced to live in an underground facility where she does her research and uses normal every day people and animals as guinea pigs with new DNA injections and expiramental damages to cause a normal person or animal to become something you've only seen in movies and believed to be fantasy.
After having the cure shoved down her throat,Katherine flees not wanting her enemies to know that she's now nothing more than a fragile human- specially not the original hybrid. She ends up in Beacon Hills,thinking that nobody would look for her in such a 'normal' town and decides to pull a 'Stefan' by enrolling in high school, pretending that she's not a 500 year old ex-vamp.