After an unprecedented global pandemic turns the majority of humankind into violent "Infected," a man gifted with the ability to speak the Infected's new language leads the last survivors on a hunt for Patient Zero and a cure.

Merricat, Constance and their Uncle Julian live in isolation after experiencing a family tragedy six years earlier. When cousin Charles arrives to steal the family fortune, he also threatens a dark secret they've been hiding.

Two strangers become connected by a tragedy, yet one dangerously feels that the connection goes much deeper than the other is willing to admit.