When Tommy Evans regains consciousness after being injured on the battlefield of modern-day Afghanistan, the world around him is not the same. Filled with cannon smoke, gunfire and the whinnying of horses, Tommy inexplicably finds himself transported back to 1880 – back to the eve of one of the British army's worst defeats in the second Anglo-Afghan war: the Battle of Maiwand. Now he must find his way back home or face the very real possibility of perishing along with most of the soldiers of the 66th Foot, the Berkshires.