Jerry's parents, Helen and Morty Seinfeld, are staying at his apartment in New York City. Helen pressures him into coming along to the 50th anniversary dinner of Helen's second cousin Manya and her husband Isaac. Jerry does not know Manya or Isaac, so he brings Elaine along as a social buffer. During the dinner, Jerry offhandedly states that he hates people who had a pony when they were growing up. This offends Manya, as she grew up in a village in Poland where she, and most of the children, had their own ponies (hers was the pride of Kraków). Jerry tries to amend his remark, but Manya leaves the table in a huff. The following day, Jerry receives a phone call from Uncle Leo, who informs him that Manya has died, and the funeral will be held on the same day as his softball team's championship game. Jerry, Elaine, and George ponder whether his comment was a factor in Manya's death. Feeling guilty, Jerry goes to the funeral, where he apologizes to Isaac for his remark; Isaac assures him that Manya had forgotten all about it. Isaac decides to move to Phoenix in the wake of Manya's death, and Elaine asks whether she can have their apartment. Isaac eventually tells her that Jerry's cousin Jeffrey is taking it. It starts to rain, and Jerry realizes the softball game will be postponed. The following day, the team loses the championship due to some exceptionally bad playing from Jerry, leading Elaine to speculate that Manya's spirit put a hex on him as revenge for the pony remark. Jerry bets Kramer he will back out of a resolution to rebuild his apartment so that it has multiple flat, wooden levels instead of furniture. Kramer eventually decides not to build levels but refuses to pay Jerry, arguing that the bet is invalid because he did not attempt the renovation.