Uptight senior, Hayley Westin, looking for the prestigious Ainsworth Scholarship - a scholarship that guarantees free admition into any school of her choice - has just found something very shocking. A fake Facebook account that someone set up of her that shows her in incriminating situations, that she has never been in before.
This isn't me!
The rising junior Jessica Adamson, who happens to hate Hayley, reaches out to Hayley saying that she was the one who made the Facebook account and the posts on it. She also says that what she had to do for her to delete the account was to step down from the position of Yearbook Editor and give it to Jessica, the position that Hayley didn't give Jessica earlier.
That's all you'll have to do.
Hayley, having advanced to the Ainsworth semifinals, must now go through an interview with the judges. However, the bio that she shad ubmitted describing her personality isn't hers - and it's an incriminating one at that. So, Hayley has no choice but to try and make it work, and does a very good job at it.
Looks can be deceiving.
After having some alone time with a boy named Matt, Hayley wakes up to find a creepy note from an unknown deliverer. The note's main content is an envelope from Hayley's mother to Hayley's grandparents about her putting up her two children for adoption. Hayley realizes that the person coming after her was her evil identical twin!
When Hayley finds the address of her evil twin Jamie after several runins, she travels all the way to Boston to confront her and her biological father, who Jamie lives with. However, when she arrives, Jamie's parents don't believe Hayley and send her to a mental home against her will because Jamie is actually insane.
Having escaped from the mental institution, Hayley meets Jamie face-to-face. Jamie manipulates and threatens Hayley into helping her. By this she means that she wants Hayley to win the Ainsworth, give Jamie an allowance, and let Jamie disappear from her life. However, during the Ainsworth Finals interview, Hayley breaks and Jamie is furious. Jamie proceeds to capture Adam, Hayley's friend who's also made it to the Ainsworth Finals, and tries to kill him. However, in an epic car chase, Jamie crashes through a fence into the water and dies.