Scarlet by Marissa Meyer is the second book in The Lunar Chronicles series, a sci-fi retelling of Little Red Riding Hood. Scarlet Benoit is searching for her missing grandmother when she crosses paths with Wolf, a street fighter with secrets of his own. Meanwhile, Cinder, a cyborg fugitive, escapes from prison and joins forces with Captain Thorne. As their stories intertwine, they uncover a larger conspiracy involving the ruthless Lunar Queen Levana, putting both Earth and the Lunar Kingdom at risk.