As thousands of protesters descend on the small town of Sweetwater and its nuclear power plant, and a struggling utility looks to cut costs the Beaucours come to grips with the impending death of their son. Madeleine, a reporter for the local paper, believes she has stumbled upon the cause of her son's cancer. But are the environmentalist's claims 'bad science' or does the 'weight of evidence' prove the nuclear power plant is causing a cancer cluster in Sweetwater.