Season 1: Episode 4: Fatal Distraction
The school dance is coming up, and Kelly has to choose who to go with her, Zack or Slater. Zack desperately wants Kelly to choose him, so he comes up with a brilliant plan to see what Kelly is thinking about him. His plan is to have Screech sneak a bug into Kelly’s room while she has slumber party. During the night of gossip, the girls find the bug. The girls eventually discover what Zack did and plan a scheme of their own to get Zack back.