It's been years since Zack, Screech, Slater, Jessie, Kelly and Lisa left Bays...
Saved by the Bell: The New Class
Season 1 Episode 10: Swap Meet
Weasel finds out he has a rare misprinted version of a comic book that is very valuable. After he sells it, Scott tries to get it back so he can sell it himself, buy concert tickets, and take out a pretty new girl, Rachel.