As Kabur approaches the Mountains of the Moon, he witnesses a strange metal fortress fall from the sky, destroying a nearby village... With the help of several travelers he must then face the terrifying creature that emerges from the ship, accompanied by two fearsome hounds... Fortunately, in this desperate fight, Kabur will be able to rely on another extraordinary visitor, also from the stars... This 48-page saga by Roy Thomas, Jean-Marc Lofficier and José Luis Ruiz Pérez is supplemented by an Epilog by Miguel Angel Yzaguirre and a tbonus ale recounting an heretofore untold adventure of Bao by Luciano Bernasconi.