Eerily attuned to one another, twins Regina and Renata are so identical that even their mother can’t tell them apart. Then tragedy strikes: a vicious attack leaves one twin dead and the other so traumatized that she turns totally inward, incapable of telling anyone what happened or even who she is. She remains lost to the world, until the day Mark, a family friend, comes to visit–and the young woman utters her first intelligible word.