Joanna Hanley is an up-and-coming corporate attorney who returns to her hometown of Millwood, a prairie town with an industrial past, to represent a major client in a case against a group of sick high school girls. But after winning the case handily, Joanna learns that the girls are actually sicker than previously thought.

Unable to shake the feeling that something in her life is not right, she realizes that all the answers she's looking for can be found in her old hometown. And if she's going to fix herself, she has to start where it all began – with uncovering all of her family's deep secrets.