Khloe receives the shock of her life when reports circulate that she is not the biological daughter of Robert Kardashian, Sr. Determined to put an end to the rumors about who her father really is, her family urges her to take a DNA test. But their insistence has Khloe feeling even more uneasy, especially since it times with her mom Kris' admission of an extramarital affair around the time that she was born. Meanwhile, Lamar finally expresses the painful emotions that have been holding him back.