This book tells the story of a grandmother who has Huntington's disease, a genetic condition, from the perspective of her grandson, Leo. Huntington's Disease affects 5 to 7 people in every 100,000 people of European ancestry, and also affects people of some other ancestries but less frequently. This book is intended to serve as a way to communicate with children about Huntington's Disease, and help children understand what it means for them and their family member affected by Huntington's Disease.