Your sister Natalie was falsely accused of something she didn't do. She was pushed away. She always promised herself she won't do the same thing to you. She is the one who took care of you since your parents had passed away. But recently you discovered that your gf was cheating on you. And when you broke up with her, she accused you of a bad thing. Your sister believed her and pushed you away leaving you alone. And now 7 years later, she found out the truth.