The last and perhaps the most mysterious of The Chronicles tells how a simple-minded donkey called Puzzle and a scheming ape named Shift set in motion the final days of Narnia.Shift dresses the donkey up in a lion skin and pretends that he is Aslan. He lies to the Narnians, saying that Aslan has sold them all to the Calormenes to work as slaves. The truth is that the ape has sold them himself