Zenda is a fictional kingdom featured in the novel "The Prisoner of Zenda," written by Anthony Hope in 1894. The story revolves around a young Englishman named Rudolf Rassendyll, who becomes embroiled in a political intrigue when he is drawn into a plot to save the rightful king of Ruritania from an evil usurper. The novel explores themes of identity, loyalty, and adventure as Rassendyll assumes the king's identity to thwart the conspirators. The tale has inspired various adaptations, including films and stage productions, highlighting its enduring popularity in literature and entertainment.