The Son of Neptune Riordan on Percy's birthday, August 18. Nine months after Percy Jackson's defense of Mount Olympus in "The Last Olympian", Percy finds himself alone and on the run from monsters in southern California without his memories. Under the initial guidance of Lupa, the wolf-goddess and protector of ancient Rome, he makes his way toward Camp Jupiter, the Roman demigod training camp and counterpart to the Greek demigods' Camp Half-Blood. Upon arriving, he is attacked by several Gorgons — Stheno and Euryale — and successfully defends a disguised goddess Juno and the camp with the help of the guards on duty. Having
Pierides (mythology) Pierides (mythology) In Greek mythology, the Pierides (Ancient Greek: Πιερίδες) or Emathides (Ἠμαθίδες) were the nine sisters who defied the Muses in a contest of song and, having been defeated, were turned into birds. The Muses themselves are sometimes called by this name. They were the daughters of Pierus, king of Emathia in Macedon, by Antiope of Pieria or Euippe of Paionia. The sisters were also called Emathides, named after their paternal uncle Emathus. In Ovid's "Metamorphoses", Urania, one of the Muses recounts their contest with the Pierides to Athena in the following excerpts:"So spoke the Muse. And now was