He has created a new Olympus, with palaces and temples similar to those in ancient Greek. He is crazy and calls himself Basileo. He needs a new Hercules, to sit by his side on the throne of Olympus; he has tried many of them, but all of them have disappointed him… Thus Basileo decides to subject Zagor to the twelve labors that the legendary semi-god once faced. How will the Spirit with the Hatchet manage?
In Starbuck, a town near Darkwood Forest, Chico meets a mysterious individual who offers him two necklaces (one for him and one for Zagor), capable, according to him, of keeping him always out of trouble. However, in order for them to work, he needs a drop of blood. Of their blood...
But Chico has been tricked! The mysterious individual was Molnar, one of Bela Rakosi’s servants and, with Zagor’s blood, he wants to bring his master back to life. Zagor and Chico, together with Dr. Metrevelic, go to Bergville, the location of the vampire’s resurrection. But by now it is too late to avoid it: the Prince of Darkness has returned to walk the Earth!