UNDENIABLE: THE TRUTH TO REMEMBER follows five Holocaust survivors who share their harrowing stories with a diverse group of students from Hastings High School in Houston, Texas, a school that does not traditionally teach the history of the Holocaust. The personal remembrances of these survivors lead these Texas teenagers to embark on an emotional journey of learning and discovery. Woven together throughout the special are the heart-wrenching, surprising and hopeful stories of survivors Ruth Steinfeld, Rose and Arthur Gelbart, two child-survivors of the Holocaust who have been happily married for 66 years, and Pieter Kohnstam, who was babysat by Anne Frank before her family went into hiding and later was captured. Also, the CBS special includes an exclusive feature about 97-year-old Holocaust survivor Lily Ebert, who, along with her great-grandson, recently became a viral sensation on TikTok.