"Hundreds and hundreds of letters were coming from everywhere imaginable." 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?