Thomas, the father of ①②-year-old Paul, has disappeared without a trace for a year now. When the boy and his best friend Max spend the summer holidays on the Swabian 嗄lb, the two try to investigate the disappearance of Paul&#③⑨;s father. To do this, they want to find a legendary cave that Thomas studied. But his notes have to be deciphered first. They also have to deal with wild an...
