Slater, playing against leading man type and virtually unrecognisable under subtle but superb make-up, stars as Bob Maconel, a disgruntled office drone constantly struggling from one bad day at work to another. Trapped in his dull cubicle, mostly ignored by his co-workers and bullied by his superiors, Bob daydreams of "going postal" on them all before ending his own miserable existence.

But before he can find the courage to make his dream a reality, he finds himself unexpectedly transformed from all-round loser and potential killer into accidental hero when another stressed out employee beats him to the punch and opens fire. Rewarded with both a promotion by the head of the company, Shelby (Macy), and with the affections of Vanessa (Cuthbert), his secret office crush who has been left paralyzed by the shooting, Bob begins to see life in a completely different light. Unfortunately, going from zero to hero in the blink of an eye has its downside and soon Bob finds himself closer to the edge than ever before.