Mr. Shoop teaches Denise how to drive and emphasizes to all the students that, before they consider starting a vehicle, they must not be under the influence of alcohol. Denise performs all the protocol of safety checks before driving.
Marge is in jail for drunk driving in Homer's car. While attempting to contact Marge, Homer acts like a waiting line and puts the other person on hold when he learns that he will be put on hold. Lisa has suspicions that Marge was framed and questions Homer.