George and Susan go shopping for wedding invitations and George decides to buy the cheapest brand in the store. As they run into Kramer, he calls Susan “Lily”, much to Susan’s annoyance. Kramer later tells Jerry that a bank will offer anyone $100 if they are not greeted with a “hello” by a teller when they enter the building.
Jerry and Elaine realize that once George gets married it will be just the three of them. At night, Elaine admits that she is also leaving the group. In a dream sequence, Jerry and Kramer argue about inventing a periscope for use in an automobile, until Jerry is jarred back to reality by almost getting hit by a car and is saved by a woman named Jeannie Steinman (Janeane Garofalo).
Meanwhile, George tells Susan that Elaine wants to be an usher at their wedding, but Susan says no, saying that there will be no female ushers. She also says Kramer is no longer an usher since he called her Lily. George warns Susan that if she won’t let them be ushers, the two will be devastated. Susan tells George that she doesn’t care.
The next day, George tells Elaine and Kramer the news. Jerry tells them about Jeannie. George admits that he didn’t want to be with Susan after they got engaged, and that he needs to find a way to get out of the marriage without confronting Susan. Elaine suggests smoking in front of Susan, since Susan hates smoking. This doesn’t work, as the smoking makes George sick and Susan is not convinced. Kramer suggests a prenuptial agreement. When George requests it, Susan laughs out loud at him and George realizes he is stuck with the situation. Kramer goes to the bank, and upon being greeted with the word “hey” instead of “hello”, he asks to see the manager (Stephen Root).
Meanwhile, George and Susan receive a box of invitations. George leaves, and Susan begins licking the envelopes, commenting “Ugh! Awful!” Jerry, however, goes to the bar, only to run into Jeannie again and proposes marriage to her.
Meanwhile, Susan keeps licking the envelopes, gets sick and passes out. George goes to the bar and celebrates Jerry and Jeannie’s engagement. Jerry and Jeannie go to Monk’s Cafe. George returns to his apartment to find that Susan has collapsed. At Jerry’s apartment, Jerry tells Kramer that he doesn’t think that Jeannie is his type, and he regrets the proposal. Kramer says that he got only $20, not $100, from the bank. George calls and says that he took Susan to the hospital.
At the hospital, George, Jerry, Kramer and Elaine are informed that Susan has died from licking the envelopes (which contained toxic glue). The trio show sympathy for George. After a brief pause, George casually suggests that the group go out for coffee.
George goes back to his apartment and tries to call Marisa Tomei to have a date with him after the funeral, but she hangs up.