After assassinating Hercules, Percy meets his ancestor on his mother's side. One Edward Kenway. After chatting with his ancestor, the Son of Poseidon got information about the location of Edward's weapons and gear. But what of the Jackdaw? And the Observatory? It's a race against time for the Observatory and a new Piece of Eden made by the Titans: Krono-Sphere. Sequel to The Daughter of the Assassin and the Huntress