Callum Drake, a half-dragon mage, is recruited into the Order of Britain - a special branch of Britain's Guild of Mages. As their first mission, the members of the Order are dispatched to a remote fort in India, where British soldiers are under siege from a force of demonic redcoats.
Callum and his companions, Elizabeth and Nathaniel, must use all their wits and abilities to survive and defeat the Devil's own Regiment!