Frasier is scheduled to appear on the debating television show Psychology This Week. However he decides to cancel when the original opposing colleague to appear cancels and is replaced by Frasier's one time terrible date, Dr. Lilith Sternin. Frasier is not too enamored with Dr. Sternin, or so he says. Diane thinks it's love. Frasier's passionate diatribe against Dr. Sternin in Diane's mind is not the opposite of love - indifference is. But before Frasier can cancel, Dr. Sternin comes to the bar to speak to him to the lay the groundwork for the debate. As their pre-show meeting turns into a name calling argument, they decide to proceed with the debate to one up the other in a public forum. Diane believes she has the answer to address both Frasier's latent romantic feelings for Dr. Sternin, and Dr. Sternin's stated wish to one up Frasier. Diane's plan takes an unexpected turn during the debate. Although the debate and reaching the goal of Diane's plan don't quite come off as expected, Diane also tests Pavlov's theory in reaching that goal.
—Huggo