Humanity is battling intelligent, adrenaline-fueled creatures born from a viral strain. After being bitten, モーガン, モルガン realizes he is asymptomatic and can communicate with the infected, leading the last survivors on a hunt for Patient Zero and a cure.
Stephanie is abandoned によって her parents and forced to survive on her own. When her parents return, they are surprised to find her alive after they discover dark, スーパーナチュラル forces are wreaking havoc, with her at the center of the turmoil.