You have to promise me

Hailee Evans , a girl who comes from a small town and lives with a big family where everything seems perfect, although it isn't.

She always has to change friends and her personality to please her family. She has never felt at ease or safe because she has to change schools at least 2 times a year. Then, one day.. she meets this girl Sofia during detention, a girl who is very rebellious and daring. She takes Hailee to a party at a club one night. She meets Sofia's boyfriend, Benjamin, there and he seems to be even more rebellious. Benjamin has a best friend, which is also Sofia's brother, and he recognises Hailee but where from?