When Lainey moves back to town, Barry asks her to the prom; but when she says no, he plans a senior prank with Principal Ball's car to get out of going. Meanwhile, Erica tells Murray she has made a final decision about her future in college, and he is furious and insists she pay her own way for rent and food.

The Dropouts are thrilled when they book a gig at a Flyers charity carnival, and Adam uses the opportunity to make his very first rockumentary. Since Barry doesn't want to miss out on the fun, he forces his way into the band, despite his sister's objections. Meanwhile, Beverly's concerns about Murray's health push him to the limit.