Zack gets off on the wrong foot with his new professor of anthropology, Professor Jeremiah Lasky. Professor Lasky pegs Zack as a smart mouth immediately and turns the tables on him by selling him a copy of the midterm before Zack realizes that he is the instructor. All the girls have crushes on Professor Lasky, while Slater is trying to gain weight so that he can wrestle in a higher weight class.

Slater is being courted by an exclusive fraternity while Leslie is being courted by a sorority. Zack really wants to get into the same fraternity as Slater, but they don't seem as interested in him. Zack manages to impress Rick the fraternity guy, but both he and Slater worry that Screech might ruin their chances in being accepted because of his goofiness.

Zack wants to take Leslie on a ski trip, however, she won't go alone with just Zack. Zack asks Slater to go along, but he must first find a date willing to go skiing with them. Slater meets a student activist who challenges him to embrace his Hispanic heritage. This topic causes friction between Zack and Slater, and puts the whole ski trip in jeopardy.

It's homecoming weekend. Leslie's parents come to visit her. She is sick of their controlling ways, so she asks Screech to be her date in order to freak them out a bit and Screech agrees to be especially geeky for this event. Meanwhile, Zack is invited to a homecoming banquet by the guest of honor, a football star who could help him score in some business. Also Alex and Slater become closer while training for the role of the university mascot.

Zack, Slater, and Screech make plans for a Friday night poker game. Mike nixes the idea of having the game and the guys decide to help him with his love life to get Mike off their backs. They encourage Mike to ask out the English literature professor, Judith Trudell, that he has a crush on. Meanwhile, Kelly, Leslie, and Alex develop a crush on their new karate instructor, John Hammer, and vie with each other to try to win his affections.

While the girls put together a male pinup calendar in order to buy a big screen TV, Zack poses as Lasky in order to date an admirer of the professor's.

Zack gets Screech to tutor a tennis star he is dating, only to find an attraction developing between the two of them. After they two argue, Screech temporarily moves in with Mike and drives him crazy. Meanwhile, Kelly and Leslie decide to throw a fancy college party, but things don't go quite as planned.