First came the storms.Then came the Fever. And the Wall. After a string of devastating hurricanes and a severe outbreak of Delta Fever, the Gulf Coast has been quarantined. Years later, residents of the Outer States are under the assumption that life in the Delta is all but extinct but in reality, a new primitive society has been born. Fen de la Guerre is living with the O-Positive blood tribe in the Delta when they are ambushed. Left with her tribe leader's newborn, Fen is determined to get the baby to a better life over the wall before her blood becomes tainted. Fen meets Daniel, a scientist from the Outer States who has snuck into the Delta illegally. Brought together by chance, kept together by danger, Fen and Daniel navigate the wasteland of Orleans. In the end, they are each other's last hope for survival.