The humid tension of a grueling Ranger selection process dissolves into pure survival horror. Recruit 81 carries the crushing weight of a dead brother into the Georgia wilderness, pushing his physical limits until the sky literally breaks open. This is not a standard training exercise. A towering, mechanical nightmare from another world descends upon the exhausted candidates, turning a test of endurance into a frantic, low-visibility hunt where the military hierarchy shatters against superior, alien technology.