"Across the Nightingale Floor" is a historical fantasy novel by Lian Hearn, set in a fictional world inspired by feudal Japan. The story follows Takeo, a young man with a mysterious past, who becomes entangled in a conflict between powerful clans. The novel explores themes of loyalty, honor, and the struggle for identity. As Takeo navigates his journey, he encounters various characters, including Kaede, a strong-willed woman, and Lord Otori, who guide him through a world filled with intrigue and danger. The narrative combines elements of adventure and romance, creating a rich tapestry of life in a tumultuous era.