Conan meets thrill-seeking thief Valja, who asks him to help her steal a gold statue of the goddess Ishtar. The theft goes badly, and they're saved by the priestesses of Mitra. As he suspects, the priestesses want something in return: help in their war against Set, the god of serpents and chaos.
Opening with the heist of the gold statuettes of Ishtar, we're introduced to Conan and his current lover, Valja, in their element. It's an interview of sorts for the priestess. At the same time, the Cult of Set is working on sorcery, the Cult of Zath, the spider god is working against the Serpent Men. Set is one of the Great Old Ones, with different names for different cultures, with a plan to fuse Serpent Men and humans through foul magic. The ceremony is one that requires specific conditions, and part 2 of the book takes place fifteen years later. In between the battles are back stories and the motivations of various characters.
The omniscient view gives more insight into the story than the average action movie would, and it splits some of the attention away from the titular Conan. It works here because he's still the main fighter in the battles, which are cinematic and thrilling to read. If you enjoy classic Conan tales, this will be a great read for you.