Eight people once saved themselves on the ark from the great flood. The compass rose has eight directions, and the wheel of fortune has eight spokes. Eight authors are writing their first joint novel in eight days. Andy Otto, the star host of the Cologne station Powerradio KKN, is not easily thrown off track: A bit of trouble with his new boss, a bit of stress with his girlfriend - so what? But when he finds a mobile phone in front of his regular kiosk and wants to return it to its owner, his life completely unravels. Christine Osterling, a diligent kindergarten teacher, is found dead among the stuffed animals, and Andy becomes a suspect in her death. What does the domino piece with the eight dots in the hand of the corpse mean? Soon, Andy starts encountering this number everywhere. The eight guides him to the Eifel, to the Sauerland, to the North Sea, and to Münster.