In the kingdom of Aquilonia, a year of peace for King Conan and his new queen Zenobia is broken when the latter is abducted by a demon.

Conan learns from the wizard Pelias of Koth that the eastern sorcerer Yah Chieng of Khitai is responsible, and begins a quest to recover her, little realizing that the fate of the world as well as Aquilonia rests on the outcome of the contest.