Peter Plum is a short film depicting the sociopathic titular character's desire for vengeance at being snubbed for a job promotion. The target of Peter's ire is the slightly naive co-worker Corbin; the recipient of the work promotion. Within hours of hearing he was passed over for the job Peter begins weaving a plot, using co-workers as pawns, that will unravel not just Corbin's position in the company, but his personal life as well. Peter arranges a love triangle between Corbin and his girlfriend, and her ex-fiance. Unable to cope with these new personal life stressors fabricated by Peter, an unfocused Corbin begins making blunders at work. His only aid through this strife is his new confidant, Peter, who is the same orchestrator of it.