Due to a mixup by the caterers, George's wedding is delayed until June. He sets Jerry up with Susan's best friend Hallie so that he and Jerry can double date. At their first double date, at the Friars Club, Jerry neglects to wear a jacket, then accidentally leaves with the one the club loaned him. Kramer borrows it without permission, gets it dirty, and takes it to the cleaners. Jerry is unable to return it before a second double date, this time at the Flying Sandos Brothers magic show. As part of the act, one of the performers takes the jacket and throws it into the audience to make it "disappear". After the show, Jerry asks for the jacket back, but the magicians deny taking it; Hallie reassures Jerry that she will get the jacket back, but Jerry is not convinced.
J. Peterman hires a partially deaf man, Bob Grossberg. Bob conveniently cannot hear whenever he is assigned work, and Peterman passes his load on to Elaine. Elaine suspects Bob is faking, and Jerry tries to test Bob's hearing but proves no help. Elaine herself tests him by professing sexual attraction to him. Peterman overhears and gives them tickets to the Flying Sandos Brothers. Elaine is pressured to attend by her boss, who suspects her remarks to Bob were not sincere and she was making fun of his handicap (which would ultimately result in her being terminated from her job).
Kramer tries polyphasic sleep, which causes him to be restless during his nighttime waking hours and causes him to fall asleep randomly at inconvenient times. He falls asleep on his girlfriend Connie during a make-out session. Thinking he is dead, she calls some friends to take him away so that her mobster boyfriend will not know she was cheating on him. Kramer is dumped into the Hudson River, which shocks him awake. After surfacing, he tells the police Connie tried to kill him. She calls her lawyer, Jackie Chiles, but he refuses to take the case when he hears Kramer is involved.
Jerry is told he owes $800 and will no longer be under consideration for Friars Club membership if he fails to return the jacket. At the Friars Club, Jerry and George spot a Flying Sandos Brother wearing a jacket. They follow and rip it from his hands, but realize that the jacket has a different crest. Hallie witnesses this just before returning the real Friars Club jacket to Jerry, and loses interest in their double dating. Bob forces himself on Elaine at the show; she shoves him off and he accidentally drops his hearing aid. Elaine takes the opportunity to try it on. The magicians chase Jerry and George backstage to recover their jacket, through the emergency exit, which sounds the alarm. The noise is amplified by the hearing aid, causing Elaine great pain.