In a grim future world where the sun has vanished from the sky, people glean what warmth and light they can from the firestones mined by an untouchable caste known as the Quelled. Countless taboos are shattered when Elsha, an idealistic and rebellious Quelled girl, is chosen to be handmaid to the Firelord—the man revered by those calling themselves the Chosen. Traveling in the privileged class, Elsha encounters ugly, unthinking prejudice; she also meets a few relatively enlightened Chosen men, who cannot help falling in love with the feisty maid. Spurred on by a hatred of injustice, Elsha battles against sexism, improves life for the Quelled, and even (it seems) hastens the return of the sun to her world.