It is about a familey with nine kids and the parents got devorced and there is a snotty step sis and i dont know what else also what would be a good twist
one good kid has to kill another child on accident and the snotty girl is rewarded with trust for ratting the good kid out all while the other kid is somewhat shunned
a good twist would be to make the snotty step sis die doing something real heroic like saving one of their lives or something, then they all feel bad and question themselves......and they get over it and let it go.....