Barbara's past returns to haunt her as former nemesis Lady Shiva seeks revenge for the death of her little sister eight years prior. Several plot twists add to the story as we find out the Sandy (Lady Shiva) and Helena were BFFs in high school though they haven't seen each other in eight years. Meanwhile, Dinah learns a valuable lesson about the ethics and morality of superpower use when she goes over the line to get a boy to like her.
