J.C. Wiatt is a talented and ambitious New York City career woman who is married to her job and working towards partner at her firm. She has a live-in relationship with Steven, a successful investment broker who, along with J.C., agreed children aren't part of the plan. J.C.'s life takes an unexpected turn when a distant relative dies and the will appoints her the caretaker of their baby girl, Elizabeth. The baby's sudden arrival causes Steven to leave, breaking off their relationship. Juggling power lunches and powdered formula, she is soon forced off the fast track by a conniving colleague and a bigoted boss. But she won't stay down for long. She'll prove to the world that a woman can have it all and on her own terms too!

Baby Boom struggles to impart its feminist ideals, but Diane Keaton's winsome leading work helps keep things breezily entertaining.