Season 3: Episode 36: Zack's Birthday Party
It's summer, and the gang leaves Bayside for the beach. Sadly, they have to work, well, all of them but Lisa. She's too busy shopping. They all get a job at a beach club, and their boss, Mr. Carosi is a little on the tough side. While working, the gang tries to hold a surprise birthday party for Zack, but it's more trouble than fun.