In the year 2070, a top-secret government project aimed at eradicating vampires from the face of the earth gave birth to a zombie uprising, which ravaged the North American continent. When the borders of all allied nations closed their doors, the survivors were forced to learn to live in the desolate remains. As a result, a new military organization called the United Continent Core was formed. They were tasked with protecting the living and killing the undead. These soldiers became known as Gatherers. Six colonies were established over the course of four years. Everywhere else became known as the outlands. Captain Maria Ventriz and Father Matt Cross, both Gatherers in the UCC, are out in the field when what starts as a firefight with zombies turns into the strangest adventure of their lives. When Matt is nearly killed in the fight, his life is saved by his sister, Lexy, who is a vampire. Maria, who doesn't trust people under the best of circumstances, is mistrusting of her because of what she is. After an encounter with Lexy's maker, Nils Rishus, they agree that with Lexy's skills as a geneticist and their access to other scientists, they should work together to stay alive and find a cure.