The Ascendance Trilogy is a series of young adult fantasy novels written by Jennifer A. Nielsen. It follows the story of a young orphan named Sage who is thrust into a dangerous game of deception and power when he is chosen to impersonate a missing prince. The trilogy explores themes of identity, loyalty, and the struggle for freedom. The series consists of three books: The False Prince, The Runaway King, and The Shadow Throne. Set in the fictional kingdom of Avenia, the narrative combines adventure, intrigue, and political maneuvering, captivating readers with its twists and character development.