Kirk, Spock & Bones beam down to Butterfly 8 where they are ambushed by female aliens. When Scotty beams Sulu and Chekov down to rescue them, a transporter malfunction sends them to the Oval office the day before Kennedy was shot.

It's the start of a new term, and Zack is planning to take his relationship with Kelly to the next level. Meanshile, Slater gets reacquainted with old schoolmate Jennifer, who wants Zack to join them as well. Meanwhile, a Mystery man is running around school with no pants on, and Lisa is determined to find out who he is.

With tons of newly acquired 'free time' Sarah looks to Hollywood to fill the void! She tries her hand at a big budget movie, television drama, hosting a talk show and even co-hosts a search for America's next-top-Governor! But Porn Valley keeps calling. Will she answer?