As the world around them collapses under the weight of a slow, creeping virus that erodes memory, fifteen-year-old Dany and her five-year-old sister are on the edge of their own personal apocalypse - fearing separation at the hands of child services. When a dangerous new strain of the virus emerges, Dany careens headlong into crisis, determined to save her sister. Together with her best friend and reluctant history teacher, they must flee the city...