Completed in March 1953 and published 4 September 1956, The Last Battle chronicles the end of the world of Narnia. Jill and Eustace return to save Narnia from Shift, an ape, who tricks Puzzle, a donkey, into impersonating the lion Aslan, precipitating a showdown between the Calormenes and King Tirian. This leads to the end of Narnia, revealing the true Narnia to which Aslan brings them.