The Chronicles of Narnia: The Silver Chair (1990)
Eustace is sent to a horrible school and finds a friend in Jill Pole, who's also running from bullies and looking for a place to hide. The two of them are magically transported from the garden shed into the magical world of Narnia, where they are entrusted with a task by Aslan: to rescue the king's stolen son, Prince Rilian. Together with Puddleglum the Marshwiggle, they must travel north across the mountains, dodge giants, and journey down into the earth itself to rescue Rilian from the mysterious evil that holds him bound there.
Cast
David Thwaites
Eustace
Camilla Power
Jill
Richard Henders
Prince Rilian / Black Knight
Tom Baker
Puddleglum
Barbara Kellerman
Green Lady
Warwick Davis
Glimfeather / Reepicheep
Mike Edmonds
Second Owl
Roy Boyd
Lord Drinian
Nick Brimble
Giant Porter
Lesley Nicol
Giant Queen
Patsy Byrne
Giant Nanny
June Ellis
Giant Cool
Bill Wallis
Warden
Jack Purvis
Golg
Henry Woolf
Dr. Cornelius
Ronald Pickup
Aslan (voice)