Zack stays over at Screech's place for the weekend where the two of them along with Slater throw a party which is interrupted by the girls before breaking off a valuable item from Mrs. Powers.

After finding out that Bayside's glee club will travel to Hawaii if they reach the finals of a nationwide competition, Zack signs up, and convinces the rest of the gang to join him.

It's the annual chess competition between Valley and Bayside. Screech is the head champion but Valley decides to get some dirt on Screech.