While walking the streets of Springfield with Marge, Homer encounters a con artist playing a game of Three Card Monte. Thinking he will net a quick profit, Homer makes a twenty dollar bet. When Homer loses, Marge exposes the game for what it really is: a way to cheat people out of their money. Marge accuses the man of helping to ruin Springfield’s downtown area by preying on the greedy and stupid. The con artist makes a hasty getaway, but Marge gives chase and knocks him out cold. Wiggum and his men arrest the thief and take him to jail. Marge realizes the adrenaline rush of police work is something too powerful to ignore, so she enlists in the Springfield Police Academy.

Marge realizes that police work is somewhat less glamorous than she previously imagined; it entails everything from settling domestic disputes to sidestepping bribes from local retailers. Her new career also affects her social life-people consider her a cop even when she is off duty. One day, while walking her beat, Marge spots Homer parking in a handicapped zone. Marge warns her husband to move the car, but instead, Homer begins taunting her, making silly noises, and playing with her hat. Marge suddenly slaps handcuffs on Homer and places him under arrest.

When Homer is released from jail, he realizes how unhappy he is now that Marge is a police officer. While playing poker with his friends one evening, Homer grows suspicious about Herman, who is far too eager to spend time in the garage. Homer walks into the garage unannounced and surprises Herman and a sinister co-hort. Homer realizes that a counterfeit jeans ring is being operated out of his garage. Herman’s evil henchmen advance on Homer, but Marge arrives and rescues him. Later, Marge realizes that Wiggum and his men stole the counterfeit jeans for themselves. Outraged at the corruption within the force, she resigns.