Jerry does a set at a comedy club, then goes to meet George, Elaine, and Kramer afterward to see a screening of Checkmate. However, a simple miscommunication causes the four to keep missing each other at two different theaters.
Jerry returns from a two week tour to find that his old friend Babu, who Jerry drove into bankruptcy by suggesting he change the menu in his restaurant, is working at the café. He's also living down the hall from Jerry who is shocked to find that Babu is arrested for overstaying his visa. Turns out his visa application got mixed in with Jerry's mail. George meanwhile asks an attractive lawyer, Cheryl, to go out with him. She laughs at everything he says and he tells Jerry to butt out and not be funny. When they hear that Cheryl does immigration law, they ask her to ...
Elaine cant seem to figure out why her shoes are a subject of conversation. Jerry and George pitch their pilot to NBC, but the deal is nearly jinxed when George takes a peak at the cleavage of the NBC president's daughter.
A woman is eavesdropping on the conversation that Elaine has with Jerry and George at the coffee shop. Elaine decides to give the woman the impression that Jerry and George are a homosexual couple. Unfortunately that woman is a reporter from NYU who is doing an interview with Jerry for the school newspaper. She goes to Jerry's apartment and the suspicions are confirmed when Jerry and George get in a fight over a piece of fruit. She publishes an article using the angle that Jerry and George are a homosexual couple. Things get even worse when Jerry's birthday gifts ...
Elaine gets the gang to volunteer at an old folks' home. She gets freaked out by hers, George gets fired by his guy, and Jerry loses his. Kramer and Newman scheme to sell records to a vintage music store and steal the records from Jerry's old guy.
Jerry insists that his new girlfriend has implants. But she keeps insisting that they're "real and spectacular". The mystery goes even deeper when Elaine meets her in the sauna and trips and lands on her breasts.
Elaine's ex-boyfriend is recovering in the hospital and has surgery. The gang goes to visit. Kramer gets the idea to paint his apartment to simulate the feel of a ski lodge. While at the hospital, Kramer's concern about the operation gets him and Jerry in to watch. But when Kramer sneaks in candy and forces it on Jerry, Jerry starts a chain reaction that causes the Junior Mints to land in Elaine's ex-boyfriend. Jerry thinks he may have killed the guy while George, who learns that he has recently come into some money, decides to invest in the ex-boyfriend's artwork.
After dinner, Jerry gets his car back from the valet. He and Elaine get in the car and realize that the valet has really bad B.O.. Jerry goes to great lengths to get the smell out of his car while Elaine goes to great lengths to get the smell out of her hair. Jerry soon realizes that the smell isn't just a mere odor, but an entity unto itself, and finally decides that he has to get rid of his car. Meanwhile, George gets reacquainted with Susan and discovers that he drove her to lesbianism, and Kramer dates Susan's girlfriend.
In the fourth season finale, Jerry and George's pilot is finally a go. But before the taping, Elaine desperately tries to avoid NBC president Russell Dalrymple after an awkward date, while Kramer comes face to face with his TV show counterpart. Before the pilot airs, Crazy Joe Davola (see episode "The Opera") shows up to put a damper in the gang's plans. As the pilot is finally finished and ready for airtime, the executives at NBC aren't impressed with the result.
Jerry gets a shocking revelation when Elaine reveals that she faked every orgasm while they were dating. Jerry then pleads with Elaine to get a second chance in bed. Meanwhile, Kramer turns George onto the erotic pleasures of fruit, specifically the mango.
George loses his glasses at the health club, but his plans to get a new pair using Kramer's "discount" backfires. Meanwhile, Jerry buys a black-market air conditioner - the Commando 8, and Elaine gets bit by a dog at the optometrist's office.
Jerry, Kramer and Newman have reason to suspect that their accountant, Barry Profit, is taking their money and using it to buy illegal narcotics. The three organize a stakeout to confirm their suspicions, while Elaine, who had a past relationship with Barry, denies it. George gets an interview at a company that manufactures women's underwear.
Jerry and Elaine get asked to be the godparents for their friend's newborn baby. But unfortunately the position doesn't last very long when Elaine hires a drunken rabbi to perform the Bris. While at the hospital, Kramer thinks he found a pig-man while a mental patient jumps to his death and lands on George's car.
Kramer invests in a new new non-fat yogurt store, which becomes a hit in the city. Jerry and Elaine discover that they've been gaining weight and wonder if the yogurt really is non fat or not. Jerry tries to unravel this mystery while also dealing with a neighbor's kid who saw his act and the one rare instance where Jerry unleashes profanities on stage. Meanwhile, George runs into a former childhood acquaintance, Lloyd Braun, who is working on the mayoral campaign for incumbent Mayor Dinkins, but the campaign is quickly jeopardized when Elaine proposes a name tag ...
Jerry regrets giving his longtime barber the heave-ho after he gets a ridiculous-looking haircut. George gets a job interview but the boss leaves him with a very cryptic ending. Kramer begs Elaine to let him take part in her charity bachelor auction.
Jerry gets mad when he dates a masseuse. Kramer and George get massages while Jerry doesn't. Meanwhile, Elaine's new boyfriend is Joel Rifkin, an innocent man who shares the same name as one of New York's most notorious serial killers.
Jerry is deemed a racist when he purchases a Native American statue for Elaine. Kramer tries to get Elaine's company to publish his coffee table book. Elaine runs into a really creepy man on the subway who steals Frank's TV Guide and follows her to the Costanza's house. Meanwhile, George gets grounded when he has sex with a woman in his parents' bed.
George decides to convert to Latvian Orthodox to impress a girl, against his angry parents' objections. Meanwhile, Kramer converts a nun at the church, and Jerry takes a peek in his girlfriend's medicine cabinet and is stunned by what he finds.