In The Horse and His Boy, two children of Calormene: Shasta, a slave boy and Aravis a rich girl, join up with two talking horses of Narnia in a bid to escape their lives in Calormene. Set during the reign of King Peter, Shasta and Aravis cross paths with Peter, Susan, Edmund and Lucy and quickly become mixed up in a war between Narnia and Calormene. With the fearsome aid of Aslan, will the children save Susan from a marriage to the cruel Prince Rabadash of Calormene? The fifth book of the Chronicles of Narnia, it was first published in 1954.