The worlds of the ancient gods overlap, and there are evil forces that want to take advantage of this. Fortunately, Percy and Annabeth encounter the Kane siblings, descendants of a powerful pharaoh, in the face of new dangers. They need the magic of both worlds, the Greek and the Egyptian, to fend off the evil. New monsters and entirely new adventures await them. This collection includes three action-packed stories from the world of mythology: The Son of Sobek, The Staff of Serapis, The Crown of Ptolemy.