Percy Jackson has no recollection of his life so far, except for a single name: Annabeth. He is being chased by the Gorgon sisters, Stheno and Euryale, who intend to kill Percy to avenge the death of their sister, Medusa, by his hand four years ago. Percy cannot remember killing Medusa, as he hardly remembers any of his past. He escapes and stumbles upon an old 'hippie' lady named June. June gives him a choice: he can carry her to the safety of Camp Jupiter across the highway and Tiber River to regain his memory and, eventually, save the world, or he can retreat to the safety of the sea and live a long, happy life. Percy chooses to carry her across the river, losing the Curse of Achilles as a result, making him vulnerable once again.
