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
Far-Stepper/Of Wide Sea to the caverns to hide their shameful lovemaking. After they depart the island, Euryale hears a cry from within and discovers the mortal baby Medusa. Euryale devotes herself to her young sister and becomes a mother figure, bringing purpose back to her life. In her teenage years, Medusa learns of Stheno's murder from Euryale. Furious at the gods, Medusa decides to ascend Mount Olympus to get her revenge, without Euryale's knowledge. Upon arrival at the Temple of Athena, Medusa is met by Poseidon, who proceeds to overcome and subsequently rape her. Athena witnesses the act and curses Medusa, causing all