As Caspian and company journey to Aslan's How, the sacred place of the ancient Stone Table, they encounter Miraz's armies and must decide, once and for all, if they should wind Susan's Horn to summon the help that, according to legend, is prophesied to come. Despite some disbelief in the ranks, Caspian chooses to sound the Horn and send messengers to the two other Ancient Places of Narnia: Lantern Waste and Cair Paravel.