One sunny day in the park, a boxer dog named Oz meets Devon, a seven-year-old boy who is feeling both sad and angry. Devon sleeps often and doesn't eat. He worries about his schoolwork, things he's bad at sports, and feels the other kids don't like him. Oz soon starts to follow Devon home so he can make Devon's family aware that the boy needs help. An estimated six million children and adolescents suffer from depression, which often goes undiagnosed. This sympathetic book includes reassuring advice and important tips for both children and parents on finding help.