Three veterans of the Vietnam War, Ken, Greg and Art, played by Fonda, Law and Lynch respectively, have struggled to reintegrate back into society after their experiences and though furnished with the trappings of middle-class family life, they take an annual trip into the woods to take out their aggression on the local wildlife. Tiring of their haul of deer and squirrels, they turn their attention to human prey, specifically a holidaying couple (actually having an affair), young Nancy (Cornelia Sharpe) and not-so-young Martin (Alberto de Mendoza, best remembered from _Horror Express_). W...