A mysterious plague has all but wiped out humanity.
Survivor Halley Clarke reluctantly leaves her Aunt Rebecca behind in the little cottage that has been their safe-haven
for the past five years to look for other people.
Ignoring her aunt's warnings about what dangers this new world might hold, Halley follows the coast, searching through ghost towns and empty villages, encountering only death.
Just as she starts to lose hope, she happens upon Nate Reynolds- a young man whose life has been devastated by loneliness and despair. As the two grow closer, it becomes clear that this was no ordinary virus.
Driven by the need for answers, they head to London, where, in the dark and silent city, they discover more than they could ever have imagined about the otherwordly nature of the virus.