Toni is a 15-year-old girl who is trying to figure out how this whole teenager thing works. And thinks getting a boyfriend will make her look older also she starts rebelling against her mom. Like sneaking out at night drinking alcohol and dying her hair. But now she's trying to do is fit in at school and trying to impress a stupid boy. Toni's mom decides to marry Cheryl's dad. Cheryl is a 17-year-old girl who knows all about being a teenager and will help Toni in her discovery of finding her self. Cheryl envies Toni's little boy crush. She trying to help her out but Tony doesn't listen. And Cheryl is going to get Tony in a lot of trouble.Then they start to hate each otherThey eventually become friends and then more than friends but after all they are stepsisters so they have to keep it there little secret