learning that calormen is planning to attack archenland as a step to conquering narnia, shasta and his companions set off to warn archenland. after a grueling journey, a tired and barefoot shasta successfully warns the archenlanders. riding with the archenlanders, he becomes lost in dense fog, but is guided by the great lion aslan through a mountain pass into narnia, where his warning musters a force of narnians to come to the aid of their allies. at corin's urging, shasta participates in the battle to defeat the calormenes.