The Chronicles of Narnia: The Silver Chair is a future epic fantasy film based on The Silver Chair, the fourth published, sixth chronological novel in C. S. Lewis's epic fantasy series. It is the fourth in The Chronicles of Narnia film series from Walden Media, and second film of the series to be distributed by 20th Century Fox, following The Chronicles of Narnia: The Voyage of the Dawn Treader. The story begins with the return of Eustace Scrubb (Will Poulter) to Narnia, this time with fellow schoolmate Jill Pole. The two embark on a quest to find King Caspian's (Ben Barnes) long lost son, Prince Rilian. The film is expected to be released in either late 2011 or early 2012.