Mrs. Puff makes SpongeBob a hall monitor for the day. SpongeBob patrols the town, but it results in chaos. SpongeBob invites Patrick to help him watch over a maniac causing trouble around town. Eventually, SpongeBob sees a wanted poster for himself and realizes that he is the maniac. The police arrive to arrest him, and Mrs. Puff appears to explain the situation to them, saying that he is her responsibility. The police interpret this as taking responsibility for the crimes, and she is arrested.