The Silver Chair will follow the story of Eustace Scrubb (Finn Wolfhard) and his schoolmate, Jill Pole (McKenna Grace), as they embark on a mission to rescue the lost Prince Rilian, son of King Caspian, who has vanished into the enchanted Northern Wilds of Narnia. With the guidance of the marshwiggle Puddleglum (voiced by Andy Serkis), they encounter the sinister Lady of the Green Kirtle, portrayed by Anya Taylor-Joy, whose chilling performance is said to redefine villainy within the Narnia universe.