Kramer is quietly having a cop of coffee at the diner when the real (Kenny) Kramer walks in and begins complaining. "Who the hell are you?" says Kramer. "I'm Kramer." "No, I'm Kramer," says the real Kramer. In the end, Kenny wins the argument and replaces the familiar Kramer.
Next, the real Steinbrenner replaces the imitation.
Next, Larry David, the real George, replaces Costanza.
A jealous Shoshanna comes barging in from the real world to replace Elaine.
Jerry, meanwhile, becomes increasingly nervous waiting for something to happen to him, but nothing does. "I wanna be real too," he tells everyone.
But there is no... real... Seinfeld.
FINIS