The two Minnesota towns couldn't be more different: in affluent Barron, a powerful and secretive scientific research corporation enriches its residents, while downriver in blue-collar St. Croix, victims of that company's carcinogenic waste struggle to survive. The bad blood between the communities escalates into open warfare when the beautiful Ashlynn, daughter of the corporation's president, is found shot dead--and a St. Croix girl, Olivia Hawk, is accused of the crime. Olivia's father, Christopher, a Minneapolis lawyer, comes to defend his daughter and uncovers some ugly truths that endanger the residents of both towns.