How to Defeat Bully Brain: Family Accommodations follows Ava and her family, who live on Saturn. In the beginning, no one knows that Ava has a Bully Brain that makes her check things repeatedly. As her symptoms worsen, Ava's family constantly reassure her so she can get through each day. However, when Ava leaves for a space program alone, Bully Brain takes over. Will Ava be able to manage on her own and defeat her Bully Brain? How to Defeat Bully Brain: Family Accommodations is a great book for families struggling with a child who has obsessive-compulsive disorder (OCD) and provides a strategy for children to defeat their Bully Brains.