The citizens of San Antonio, Texas are threatened with extermination by a terrifying outbreak of the flu. Quarantined by the military to contain the virus, the city is in a desperate struggle to survive. Inside the quarantine walls, Detective Lily Harris is working burial statistics duty at the Scar, San Antonio's mass graveyard, when she finds a murder victim hidden amongst the plague dead. But Lily's investigation into the young woman's death soon takes a frightening turn as yet another strain of the deadly flu virus surfaces, and now Lily finds herself caught up in a conspiracy orchestrated by a corrupt local government intent on hiding the news from the world and fighting a population threatening to boil over into revolt. As the city erupts in violence, Lily is forced to do the unthinkable. With the clock ticking toward annihilation, Lily must lead her family through the quarantine walls and escape with news that just might save us all.