"The escape of the Brazilian boa constrictor earned Harry and I our longest-ever punishment. By the time we were allowed out of our cupboard again, the summer holidays had started and Dudley had already broken his new video camera, crashed his remote control airplane, and, first time out on his racing bike, knocked down poor old Mrs. Figg as she crossed Privet Drive on her crutches."
It's Harry's 11th Birthday and a giant comes to tell him he's a wizard when the thousands of letters failed to reach him. But there's one problem. Christella Lily 'Crystal' Potter is Harry's little sister. Their aunt and uncle treat her badly enough, but without her brother's care, what will they do to Christella? Will she be able to go with Harry? Will she be able to escape the Dursley's?