Logan Moore hates everyone except his dog Jack, but when a mysterious disease turns dogs into vicious, raging animals, Logan decides to run away to keep his dog safe. A mangy mutt that nobody wants. Except Logan. He doesn't care that Jack has already bitten three workers at the animal shelter or that she's ugly. She's the only one who doesn't want anything from him and that's enough for Logan. But Jack is in terrible danger. A mysterious disease is sweeping across the country, turning dogs into vicious, raging predators. Jack isn't infected, but that won't keep her safe. People are shooting dogs on sight, and asking questions later. Logan's own parents want to hand Jack over to the authorities. Now Logan and Jack are on the run. There's nowhere they can turn and no one they can trust. Except each other.