Plot summary
Jerry's parents stay in New York to put off moving to a new condo. To reinstate his "buffer zone", Jerry schemes to force them out of Uncle Leo's apartment by making his uncle dump his girlfriend. Elaine cannot get cleared for a work trip to Africa due to opium in her urine, putting not just the trip but her job in jeopardy. Low-flow showerheads are installed in Jerry's building, making Kramer turn to illicit means to shower normally. George realizes that nothing is keeping his parents in New York, and entices them to move far away to Florida. They resolve to buy a condo just to spite the Seinfelds.
Credits
Adapted from Wikipedia contributors, Seinfeld season 7. HTML formatting and reference markers removed.