On the run from her former employers through a zombie-ridden hellscape, a war-weary neurobiologist searches desperately for her missing sister. But an unlikely bond with a docile ghoul threatens to upend her understanding of the undead and the outbreak itself.

Desperate after losing her job, Alice earns money selling photos through an erotically-charged social media site. But when an avid fan takes things too far, Alice finds herself in a fight for her life.

Plagued with the same series of recurring numbers that inevitably foretell terrible events, Darby struggles with accepting that the pattern is, as her psychiatrist suggests, confirmation bias being exaggerated by her severe anxiety. As her birthday - April 15th - draws near, Darby braces for what she is positive will be her last day on Earth.