Jerry and Elaine go to Florida to visit Jerry's parents for the weekend and go scuba diving. Jack Klompus comes over to write Morty a check. Jerry notices Jack's pen. When he asks Jack about it, he tells Jerry that it can write upside down and that astronauts use it in space. Jack offers an interested Jerry the pen. Jerry refuses his offer several times, but Jack persists and Jerry finally gives in. At her own insistence, Elaine sleeps on a sofa bed with a bar that sticks up through the mattress and hurts her back. The next morning, Elaine's back is so hurt that she cannot go scuba diving with Jerry. Rumors begin to spread around the community that Jerry wanted Jack to give him the pen. Jack comes over again and Jerry returns the pen. The next day, a chiropractor looks at Elaine's back and tells her she should not go anywhere for at least five days.

The cast is in search of Kramer's car in the multi-level parking garage of a shopping mall after Kramer purchases an air conditioner. Unfortunately, no one can remember where the car was parked. Jerry is eager to urinate and goes in a dark corner. After Jerry does so, he is spotted by an officer and is held in the officer's booth. Later, George is also caught in the act of urinating. Both Jerry and George are fined and released. Then by luck, the gang finds Kramer's car but unfortunately, Kramer, who has the car keys, is still lost somewhere in the garage. Hours later, Kramer shows up, having gone on his own hunt for the air conditioner. As they all enter the car, the engine fails to start.

Jerry meets Keith Hernandez and wants to make a good impression. Meanwhile, George is out of time on his unemployment and he works harder than ever on his scheme to get a 13-week extension. He tells the unemployment office he was close to a job with Vandelay Industries, a company that makes latex products and whose main office is Jerry's apartment. Kramer and Newman take Hernandez back to a time when they were allegedly spit on by him; however, Jerry supports the "second-spitter theory" that Hernandez was not involved. Keith asks Jerry about Elaine's status. Keith makes a date with her and breaks a date with Jerry. George tries two more approaches with the unemployment officer. Kramer gets Jerry to accompany him to see a former neighbor's new baby, "you got to see the baby." Though he's gone out with Keith once, does that mean he must help him move? Elaine and Keith are hitting it off until he pulls out a cigarette. George wants to sleep with a really tall woman. Keith supports the "second spitter theory." Jerry and Elaine both break up with Keith and George might get his wish.