After the adventure in the Keid System and the confrontation with the Rexas, Arkroid, Lai Pi, and Vasina follow a hint of the Myzel of Coip Pertyl. Together with Scorge and the Yax Kuk Mo, they head for Procyon, a complex system of several stars and planets, which lies near the Solar System. Onboard the Pyramid Spaceship is also the Techno-Ferry, a state-of-the-art spaceship of the Techno-Clerics.
Meanwhile, Maya Ivanova is at the mercy of Morgotradon, whom his Treugolan vassals call the Lord of the World. In the Crystal Fortress, a base the despot has built inside an ancient volcano, Commander Ivanova is suffering a terrible ordeal from which there seems to be no escape.
The eerie man has bizarre plans with his prisoner and reveals his story to her. Maya Ivanova gains shocking insights into a time that has passed for eons …