Young Helen Keller (Patty Duke), blind and deaf since infancy due to a severe case of scarlet fever, is frustrated by her inability to communicate and subject to frequent violent and uncontrollable outbursts as a result.
A moza Helen Keller (Patty Duke), cega e xorda dende a nenez debido a un caso grave de febre escarlata, está frustrada pola súa incapacidade de comunicarse e como consecuencia ten frecuentes arrebatos violentos e incontrolables.