(from the back of the book) The moonsilver sphere is a mighty magic artifact. It causes some turmoil among the Oijaniha of the ghost mountain. Some young, ambitious warriors would like to own the magic thing to promote themselves to the top of the tribe. On the other hand the ghosts do not like it at all if one does magic in their jungle in the style of the paleskins. From the dilemma there is only one way out. The sphere has to disappear to the place it came from, to its creator and master. Your hero has taken over this honourable job and goes on the trip. And this leads - as if there were not already enough dangers - through the area of the hostile tribes... The moonsilver sphere (Mondsilberkugel) is the sequel of the solo adventure Das Dschungelgrab.