Two people in Pennsylvania discover an uncharted cave system beneath the Appalachian Trail, but are killed by winged creatures. In Montclair, Ally faces bullying for being deaf, but her supportive friend Rob helps her. They see news about ancient creatures attacking humans. Ally's family decides to leave the city to avoid the danger spreading. While driving, they encounter chaos and violence, including armed men and dangerous situations. Glenn's car crashes, leaving him trapped. Despite their efforts, they can't rescue him. The family faces the reality of a world under attack by creatures called "vesps. " The tension and fear escalate as they navigate the dangerous road ahead, with images of tragic events unfolding on Ally's tablet.