In Acapulco, Frasier has a torrid affair with a model named Kelly. Since she is going through a divorce, she asks him to keep their relationship a secret, and he promises. Back in Seattle, though, he is needled when everyone takes his "discretion" to mean that he struck out and cannot admit it. Indignantly, he reveals the truth about Kelly to Martin, Niles, and Daphne. When they believe that he is concocted an "imaginary friend" out of loneliness, he goes to increasingly insane lengths to prove it.

For Martin's 65th birthday, Frasier and Niles engage in their yearly competition to buy him the better gift. They keep one-upping each other, until Frasier makes the ultimate sacrifice and buys Martin a humongous big screen TV. Niles, however, trumps him by buying Martin his old patrol horse, Agides.

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Frasier is stunned when he learns the true identity of the man who is the father of Roz's baby.

Frasier's show marks its 1,000th broadcast. In celebration, the mayor declares "Frasier Crane Day" and arranges a public rally at the Space Needle. Frasier acts embarrassed by the fuss, but his true feelings are revealed when a series of mishaps frustrates his and Niles's attempts to get to the rally.

Frasier agrees to give a celebrity lecture on a cruise to Alaska, and invites Niles and Martin along. Trouble ensues when Maris also comes along, and spots a flirtatious society friend coming on to Niles.

Frasier dates Samantha, a high-powered attorney. He and his family become confused when it is clear that he is not the one "wearing the pants" in their relationship.

When, Frasier gets "dumped" by his high-powered girlfriend Sam, he makes a fool of himself trying to win her back.

It is a Christmas to remember when Martin sings in a church pageant, Niles gets stuck in an elevator, and Frasier spills the beans about Roz's pregnancy to her unsuspecting mother.

Daphne's attempts to lift Frasier's spirits by taking him to her favorite British pub backfires when Frasier decides to become a regular at “her” hangout.

The discovery of an engagement ring hidden in their father's drawer leads Niles and Frasier to investigate Sherry's checkered past before Martin has a chance to "pop the question."

While the station is re-negotiating everyone's contract, Frasier refuses to re-sign with Bebe, and instead chooses as his agent an earnest do-gooder named Ben. He finds his resolve tested when Ben's angle, to connect Frasier's public image with a rare crane at the zoo, goes embarrassingly wrong.

Niles is optimistic about his progress with Maris under their new marriage counselor, Dr. Schenkman. Deciding to surprise Maris with a nooner at her house, he is devastated to find Schenkman already waiting in her bed. He tells Niles they plan to get married. Niles finally decides to end his marriage. Martin looks forward to a date with an attractive neighbor, but it turns out his date is with her 86-year-old mother.

Roz wins a weekend at a ski lodge, and trades it to Frasier. Daphne invites along her friend Annie, a swimsuit model. Frasier is taken with her, but she is interested in Niles. Added to the mix is their very handsome French ski instructor, Guy. Daphne is taken with him, but he is interested in Niles. That night, confusion runs rampant.

Brian, Lilith's husband, leaves her (for a man). Distraught, she comes to Seattle intent on seducing Frasier. He does his best to resist her, and she ends up sharing a night of passion with Niles. Frasier discovers them in her hotel room the next morning.

Sparks fly when a family wedding re-ignites a long-simmering feud between Frasier and his fiery Greek Aunt Zora (guest star Patti LuPone).

The radio station hires a handsome new doctor to host a call-in medical show,but Frasier, nursing his male ego, is determined to find a flaw in his new colleague, who seems just a little "too perfect."

Bulldog becomes a hero when he appears to thwart an attempted armed robbery at the café. Only Frasier saw what really happened: mistaking a different man for the robber, he pulled Roz in front of him as a human shield, inadvertently spilling his coffee on the actual robber. When Bulldog basks in his acclaim and refuses to confess, Frasier prepares an elaborate surprise to draw out his conscience at the SeaBea awards.

Frasier has a torrid affair with Caitlin, a young artist. Their physical chemistry is perfect, but Frasier feels guilty when he realizes they have nothing else in common. Overpowering lust distracts his attempts to break up with her, until a night at her apartment when she reveals some of her crazier habits.

Daphne overhears Niles talking about the woman he loves without realizing it is her. When she asks him who it is, his courage fails and he randomly names a neighbor woman, Phyllis. Daphne offers to prepare dinner for both of them at his apartment. While working together, they enjoy each other's company so much that Niles is prepared to tell her the truth, until the real Phyllis shows up at the door.

Fed up with their pathetic love lives, Frasier and Niles throw a singles party at Niles's apartment. They are soon at odds over the same woman. Martin tries dyeing his hair to appear younger for the party. The climax of the evening comes when Roz's water breaks, and they rush her to the hospital, where she gives birth to her daughter, Alice.

Roz stays with Frasier while her new apartment is being painted, and panics when she receives a message from Rick's parents, her baby's future grandparents. Frasier invites them for dinner. Both parents have enormous noses, and the Crane family spends the whole evening desperately trying to hide their laughter.

While at the opera one evening, Frasier meets a lovely woman named Tricia. The trouble is, every time they make a date, Frasier is late, and Tricia has had it with him. Yearning to get to know her better, Frasier leaves a message on Tricia's answering machine, pleading for a second chance. Meanwhile, Niles becomes interested in Allison, who lives in Frasier's building. Niles convinces Frasier to join him at Allison's place for an exclusive meeting of the prestigious Safari Club, but that means they'll have to back out of Martin’s plans to take them to see "Chimps on Ice."

Frasier enlists Daphne's aid in protesting the demolition of his favorite old bookstore. But when the police move in to break up the demonstration, Frasier takes off, leaving Daphne to be hauled away by the cops. Although Daphne forgives Frasier for abandoning her, Frasier faces another crisis of conscience problem with the ads for “Happy Dreams Tea,” which claims that the product guarantees happy dreams after its use. As a psychiatrist, he feels that he can’t claim the impossible and therefore refuses to read the ads on the air.