Josh's Life before the treehouse

Joshua William Dun, son of James Arthur Dun. Is one of the richest People in their small hometown. Keyword: Small. Where only the outcasts or the rich live. And Josh is sick of it.
Tyler Robert Joseph, Who is an orphan. Wants nothing else apart from a family for him too call his own.
So when it's a busy day. And Tyler returns to his tree house to find a boy with yellow hair... chaos erupts