The plot is a loosely based on a melange of motifs from previous Conan short stories, most notably "The Scarlet Citadel", with which its early chapters shares an almost identical storyline: Conan defeated in battle, captured and placed in a monster-infested dungeon, finds an unexpected ally and escapes; meanwhile, the population of the Aquilonian capital, believing him dead, riots and is ready to accept an alternative King. From here the two diverge: The Scarlet Citadel, a short story, ends with Conan coming back when the rioting just started and making short work of his foes; in the book-length Hour of the Dragon it is much more complicated, Aquilonia has to live under a long and harrowing foreign occupation while Conan goes through a long hazardous quest, before he could finally come back and dispose of his foes.