The Left Hand of Darkness by Ursula K. Le Guin is a sci-fi novel that won many awards. The book is not heavy on science, but rather focuses on creating an immersive atmosphere. The protagonist is on a journey to prepare a new planet to enter an alliance of worlds. The planet is inhabited by humans who can change their gender, which is a cornerstone of their society. The book explores various gender-related twists and deviations, making it a unique and interesting read.