This season finds the Crane brothers (Kelsey Grammer as Frasier, David Hyde Pierce as Niles) in their usual competitive state, with misadventures at fancy dinners, parties, and galas occurring at an alarming rate. Perhaps the most notable development this season is Roz's (Peri Gilpin) surprise pregnancy. Her decision to keep the baby and her dilemma over whether or not to tell the father about it are prevalent throughout the entire season, which culminates in Roz giving birth at one of Frasier and Niles' parties. Martin's (John Mahoney) personal relationships are given more screen time than they've had in the past, and his sons worry about his potential marriage to Sherry (Marsha Mason), while Niles himself is still in a constant state of anxiety concerning his feelings for Daphne (Jane Leeves).
by Tracie Cooper synopsis