Jen and a group of friends set out to hike the Appalachian Trail. Despite warnings to stick to the trail, the hikers stray off course—and cross into land inhabited by The Foundation, a hidden community of mountain dwellers who use deadly means to protect their way of life. Suddenly under siege, Jen and her friends seem headed to the point of no return— unless Jen’s father can reach them in time.

The film takes place one year after the events of Captain America: The First Avenger, in which Agent Carter, a member of the Strategic Scientific Reserve, is in search of the mysterious Zodiac.