JJ's senior prom is coming up but he's not going because Colleen has made him another offer. Then he hears from Beth. In other prom-related doings, Meg's new friend Carol invites her---but not Roxanne---to a pre-prom sleep-over at her house. Meanwhile, Patty's afraid that no one likes her (there's some reason for this: she has a reputation as being a ""know-it-all""); Natha puts Henry in another delicate situation at the Girard Avenue store; and Jack runs into Professor Witt near the store and senses that there might be something between him and Helen.