A thrilling dark comedy in three parts. Timid schoolteacher Ian Telford (Jim Howick) faces the Stag Weekend from Hell, as he joins his future brother-in-law Johnners (Stephen Campbell Moore) and several obnoxious mates on a poorly planned deer-stalking expedition in the Scottish highlands, under the watchful eye of a menacing gamekeeper (James Cosmo). But it quickly gets messier than anyone expected, when the hunters become the hunted. And as they are brutally eliminated, one by one, their true personalities emerge, sordid secrets are unearthed and old friendships are tested to the limit in a ruthless battle for survival.