Lila Simmonds Coolidge passes away just before her 95th birthday...which she happened to share with Nate. This year, Nate's 40th is marked by the news that he'll be a dad, which he doesn't react to as enthusiastically as Brenda had hoped. Claire breaks off with Billy after a final night together because of his wild behavior off medication, while George's apologies to Ruth don't lessen her impatience toward his problems. Rico sleeps with Vanessa when he shows up to remind she forgot to pick their son up, but she ensures it will be the last time. At Nate's unwanted party where his mood is already low after accidentally revealing Brenda's pregnancy and creating more friction, a bird some consider to be an omen and others merely to be an annoyance continues to invade the house. When Nate is insulted for allowing its return by not closing the window it originally entered through, he takes out all his frustration on the bird.

Maggie Sibley's friend and fellow Quaker Peter Thomas Burns suffers a heart attack while watching a play, and Nate becomes intrigued about her faith when she brings it up. Brenda's blood tests reveal that her and Nate's child has a higher-than-usual possibility for developing Down's Syndrome or other complications at birth, and the doctor recommends amniocentesis to eliminate these factors. Ruth, feeling a misfit among other women in the sudden free time offered her without George, is displeased to hear that he wants the briefest divorce possible since he's already found another woman, so warns her she'd be marrying a depressed, sick man. Meanwhile, Rico is disgusted that sleeping with Vanessa is brief, to the point, and unenthusiastic, almost like another chore for him to help out with. Claire meets Ted, a lawyer, at work and eventually chooses to try to connect with him. David accidentally learns that Durrell will be performing in a school musical, and, remembering what it was like to have a parent who didn't have time to do it for him, he insists to Keith that they should go see him in it...despite the fact that Durrel's embarrassed enough about it not to want them to. After hearing Maggie admit her handicapped son's life was painful for her, Nate is inclined to agree with the doctor that Brenda should test to ensure there are no problems with her pregnancy, but Brenda is doubtful enough of his support to refuse.