It's been nine months since the virus hit, killing almost everyone it touched. Seventeen-year-old Cora and her little brother, Coby, haven't left home since. Not after the power cut out; not even after sirens faded in the distance and the world outside their backyard fence fell silent. But when a blistering drought forces Cora to go in search of water, she discovers that the post-apocalyptic world isn't as deserted as she thought when she meets Brooks, a drop-dead sexy army deserter. Fighting their way back home, Cora finds her house ransacked and Coby missing - kidnapped by the military for dangerous medical experiments in the name of finding a cure. Brooks knows exactly where Cora can find her brother, except he says it's a suicide mission. Cora doesn't care. But Brooks can't let her go...