An obnoxious group of friends struggle to survive the stag weekend from hell as a deer-hunting expedition quickly turns messy. Timid teacher Ian Telford joins the stag weekend of his brother-in-law Johnners and several of his obnoxious friends, as they embark on a deer-stalking adventure in the remote Scottish Highlands, organised by best man Ledge. But it's not long before the hunters become the prey, and their friendship is tested to the limit in a ruthless battle for survival.
The stag weekend from hell continues as the ever-diminishing group of friends are joined by a suspicious latecomer, who divides loyalties and leads them deeper into danger. Trapped in the home of their seeming assassin, the stag party are divided over their next move. But a resourceful gatecrasher arrives and offers to lead them to apparent safety, only to divide them further and cause more secrets and blood to be spilled.
The remaining members of the group pull together in an attempt to uncover the identity of their killer - and survive the stag weekend from hell.