Oprah looks back on best-selling author Terry McMillan's riveting appearances on The Oprah Winfrey Show and explores how McMillan's intense rage almost destroyed her. Oprah, for the first time, reveals how uncomfortable she was during McMillan's 2005 appearance with her ex-husband Jonathan Plummer. McMillan learned after they married that her husband was gay. Oprah also recalls McMillan and Plummer's Oprah Show reunion five years later. Plus, Oprah talks about one of the guests that changed her life forever and helped her understand the value of forgiveness. Also, a viewer from New Jersey opens up about how the show gave her the strength she needed to forgive her estranged father, after not speaking to him for eight years.