When Ashley goes hiking in the Smokies with her friends for a night of partying, the falling dark and creaking trees are second nature to her. Catching her boyfriend with another girl, drunken rage sends Ashley running into the night, stopped only by a nasty fall into a ravine. Morning brings the realization that she is alone-- and far off trail. Lost in undisturbed forest, with nothing but the clothes on her back, Ashley must figure out how to survive despite the red streak of infection creeping up her leg. -- adapted from jacket