After achieving success in her younger years, brilliant septuagenarian Madeline Matlock uses her unassuming demeanor to make her way into a position at a prestigious law firm, Jacobson Moore.

Matty's rusty trial skills are put to the test during a wrongful termination case by a woman claiming she was sexually harassed by her boss. Also, the firm's jury consultant and master lie detector, Shae, joins the case.