Robbie and his dog Pip are playing ball right next to that sacred and mysterious place--the Necropolis. A mighty kick from Robbie sends the ball flying over the hill and out of sight. Looking for it, the boy and Pip stumble across the entrance to a strangely painted Etruscan tomb. They go down the narrow, dark stairway and end up in a square room whose walls are covered with brightly-colored paintings of vases, leopards, and people in funny robes...