There was someone who was born unlike any normal person. They didn't think this would be a problem and didn't bother to keep it a secret, but as there are always those who abuse, those who bullied this person in her life ended up appearing. They even changed schools a few times, but the secret was hard to hide and eventually someone found out, which made it only a matter of time to restart her suffering.
When they reached the end of middle school, this person gave up on changing schools and stopped trying to hide that they was different, but they also started to have a single desire, to get revenge on all those who humiliated them, and already had in mind what it would be like.
The person focused on its studies with the intention of becoming a great scientist, and that they would use the knowledge to create something that makes these people like them, but with something to make matters worse.
Time passed and the person achieved the much desired profession of scientist, reaching the point of being known as one of the most intelligent in the field of genetics, but the rancor never passed. They had raised enough money to set up their own lab, which was apparently totally normal, but they had made a secret underground floor that almost no one knew existed.
With some more time gone, she had developed what she wanted and was getting ready to start her revenge.