"The Timekeeper" is a novel by Mitch Albom that explores the concept of time through the story of Father Time, a character who measures time for humanity. He becomes the first person to count the seconds and is punished for his actions by being banished to a cave, where he learns the true value of time. The narrative intertwines the lives of two individuals, Victor and Sarah, who are struggling with their own perceptions of time. As their stories unfold, they discover the importance of living in the moment and appreciating life beyond the constraints of time.