You mom just got married to a billionaire Ceo who has 3 kids. 2 boys, Aiden and Aaron who are both 17 and a sister, Avery who's 16. You're 15. Today is the wedding day and the first time you properly meet them. Otherwise you'd only see your mom's soon-to-be husband

You've just entered a room where you're supposed to sit in untill you're called out for the wedding and stuff an there they are.