Chapter 6, "The Little Miner." Princess Irene meets her co-hero, Curdie, son of Peter the Miner and an overall delight. They're great together-- first he rescues her, then she rescues him, and maybe they're in love but they're too young to really grasp the concept or the problems. Irene also has her first near-encounter with the goblins, so this is where the plot really starts to kick in. Lots of good Lydia questions in this episode, so be prepared to go down a couple rabbit holes with us.