In the time when the Earth was still new, the very difficult, impossible tasks were done by heroes. And first among them was Hercules, who managed to defeat the Still Waters: the waters of a lake so well hidden that no one could see it, the waters where the Invisible Birds of Stymphalia had found refuge and nest. With the series Mythological Tales, a new "reading" of ancient Greek myths is attempted. They are not old, oft-told stories of forgotten gods, but exciting action tales, through which all the timeless human adventures, fears, and joys that have marked and still mark the human soul unfold.