The End of Eternity is a science fiction novel written by Isaac Asimov. The story follows the character of Andrew Harlan, who works for an organization known as Eternity. Eternity exists outside of time and is tasked with monitoring and changing history to ensure the best possible outcome for humanity. However, Harlan begins to question the morality of Eternity's actions and their impact on individual lives. He falls in love with a woman from the past, named Noÿs Lambent, and risks everything to be with her. Harlan's actions set off a chain of events that threaten the existence of Eternity and the entire timeline of human history. The story is a thought-provoking exploration of the consequences of time travel and the ethics of manipulating the course of human history. Asimov's masterful storytelling weaves a complex tale that challenges readers to consider the impact of our choices on the world around us.