Seventeen years ago, Tilly Stone (age thirteen) is left to fend for herself in rural Pennsylvania when her infamous eco-terrorist father disappears under mysterious circumstances. Ever since she's tried to forget the dams they blew up together and forge a new life until her father's return threatens to upend her small-town world and her friendship with the dogged FBI agent still pursuing him. Ultimately, as the past and present fuse and blow up with more than one kind of casualty, Tilly must choose between the father she loves and her home.