Shows the effectiveness of cochlear implants for children by following two sets of one-year-old twins for three years after implantation. Each set has one profoundly deaf twin and one hearing twin. Two of the twins are from the documentary "Sound and Fury" (#8979). Also shows the comparison between the deaf and hearing child's language development. Includes commentary by implant surgeon Dr. Simon Parisier and audiologist Dr. Pat Chute.