When it's suspected that her big-pharma client's vaccine has caused a mysterious illness affecting a handful of teenaged girls, high-powered attorney, Joanna Hanley, returns to her hometown of Millwood to quickly and quietly settle the case. But when she's forced to go up against an old friend from high school, she begins to second guess the choices she's made along the path to partnership in her father's prestigious big city law firm. A turn in the case reveals that her client is not at fault, but rather than return home with another easy win, Joanna decides to stay and dig into a case she believes could turn into a profitable class action law suit.

Joanna gets a hydrologist to come test the soil so she and Billy can narrow down their list of suspects.