Go back to 1986 when Lloyd Christmas and Harry Dunn first met while in high school. Dissatisfied with their being stuck in remedial classes, the dense duo sets out to prove that they can attend classes with their peers of normal intelligence. Along the way, they encounter a greedy principal and a friendly janitor who takes Lloyd under his wing.

The second season of this series includes Barbarino replacing Horshack in a school theater production, Freddie Washington becoming a smash on the radio, and the gang pitching in to help Epstein quit smoking. Mr. Kotter is there with a word of advice and a quick-witted quip for the Sweathogs as they learn both in and out of the classroom.