Preoccupied with fighting each other, Conan and Thesias quickly discounted the powers of the Eternal Night. The rebellious Stygian princess Thutmertari, servant of Set, the Prince of Darkness, due to Conan's carelessness, gets into her hands a truly terrible weapon - the Secret, which changes the course of History itself. And now rivers of blood are washing away entire cities of Hyboria, waves of horror are rolling to the North, and the Great Serpent Set is preparing to leave the Limits of Hell to rule over the world of people. And the one who just recently was the most powerful god of the Hyborian world, and now is just a SLAVE OF THE SNAKE QUEEN, looks on helplessly at all this.