Hannah and Izzy are sisters and the bestest of friends but then one day the world goes into world war and they just barely live. All the survivors live together in their school. Then one day three boys come and Hannah falls for the one named Jack and decides to leave with him. Izzy doesn't trust him. Then a boy takes Izzy's heart and she's love struck she's torn between staying with her sister or him. Two girls, One traitor, One dream boy, and a whole lot of secrecy