"Dogs & Us - The Secret of a Friendship" tells beautiful, exciting and extraordinary real-life stories of dogs and humans around the world. From the shelter dog helping a prison inmate find courage, to the specially trained four-legged companion of a young autistic woman, to the rescue dog using smell to locate missing people. In breathtaking pictures, the documentary shows dogs' special skills and uncovers why they are essential to our society. Why can dogs communicate with us so well? How far does this understanding go? And what exactly is the secret of this wonderful friendship?