A backcountry excursion deep into the Grand Canyon wilderness is a honeymoon come true for city slickers Nick (Eion Bailey) and Lori (Yvonne Strahovski) until a viper bite debilitates their grizzled old guide (Will Patton), leaving the couple leaderless and utterly lost. Now the pair are in a fight for their lives against starvation, treacherous weather, ravenous wolves and worse. Richard Harrah directs this gripping thriller.