When Zora Mathews participates in a simple blood experiment at school, she discovers the man she thought was her father can't be. Her embarrassed mother Sarah explains that her late husband was indeed not the father: she used artificial insemination. Zora manages to track down the donor's details and both are in for a shock. He's not black, he's not liberal, he's Hal Jackson, a loud-mouthed car salesman who's a confirmed bachelor.