What would you do if everything you thought was just your paranoid father's imagination suddenly became essential for your survival? McCaid has never taken her father's warnings and survival training to heart, but when the government steals him away to combat the unexpected effects of a new vaccine, McCaid is left in charge and needs his teachings to protect her family and friends. As though that isn't enough, she discovers her deceased mother knew about the vaccine and left all the clues to save those affected. It's up to McCaid to decipher those clues and use her father's training to save not only her family but the country.