The gang wins a mystery weekend at a mansion where they are all part of a murder mystery. The trouble begins when the game goes awry and Zack is left as the prime suspect

A drug producer comes to Bayside to do an anti drug commercial and decides to use the gang. The gang feels betrayed when they learn that he also does drugs.

Zack decides to make a Video version, which turns out to be a great idea. But Zack creates a "Girls of Bayside Dating service" out of the yearbook. When everyone finds out, they decide to get back at Zack, big time!