Journeying on, Eustace, Jill and Puddleglum meet a lady in green who gives them directions to the castle of Harfang with the promise of food and shelter. But will their eagerness to get there distract them from their mission and make them miss another of Aslan's signs?

After some angry prompting by Aslan, the group realise they need to get back to the ruins and follow the instructions 'UNDER ME'. But how do they get out of the castle? And do the giants have ulteria motives for being so hospitable to two human children and a Marshwiggle?