After failing out of multiple foster homes and narrowly escaping juvenile detention, sixteen-year-old Quinn is undergoing therapy and rehabilitation at a residential treatment center. When Quinn and her best friend, Keisha, sneak onto the roof of the treatment center to look at the stars, they have no idea they'll be getting a front row seat to the start of the zombie apocalypse.

As zombies, or "carriers" as the news calls them, infiltrate the treatment center, escape becomes essential. Quinn and Keisha make a pact to leave together, but several unexpected tag-alongs complicate their plans.

As the girls battle the carriers and wrestle with their doubts about each other, who will survive and who is just dead weight?