Elizabeth Zott announces her departure from her show "Supper at Six" live on air, surprising the audience and causing widespread dismay.
Producer Walter Pine reflects on his first meeting with Elizabeth, noting her confidence and the impact she had on others.
In a flashback, Elizabeth unexpectedly visits Walter's house at night, discovering that he is involved with Harriet, who is waiting on a divorce.
The revelation shocks Elizabeth, but soon she reveals her own news: she’s quitting the show to return to scientific research.
Elizabeth's decision is final and deeply affects Walter and Harriet, leading to a heartfelt moment between the three.
Back on the show, Elizabeth thanks the audience and shares an inspiring story of a viewer, Marjorie Fillis, who has been accepted to medical school.
Elizabeth imparts a final message of empowerment, urging viewers to embrace change and not to let themselves be held back by societal categories.
Women across the country are moved by Elizabeth's farewell message and are galvanized to take action in their own lives.
Elizabeth publicly acknowledges Harriet Sloane for her advice that encouraged Elizabeth to make her life-changing decision.
Elizabeth concludes by asking viewers to challenge themselves and to take a moment to recommit to their own goals and dreams.
The studio audience gives Elizabeth a standing ovation as she finishes her final show with the words "Class dismissed," indicating the end of her program and a nod to her scientific background.