Percy isn't saved.... yet. the shocking surprise is that there's another demigod camp near the bay area of California!, except everyone there believes in the Roman form of the Gods, which are more strict, war- like and demanding. There's the possibility that Percy is that camp, but doesn't remember who he is.
The story takes place during the summer after the 5th percy jackson book.
rachael- not much of main character, but does make a couple of appearances
thalia- still a man- hater and doing pretty good as a Hunter. She's a character in the book for a little while and is also the sister of Jason ( except when Thalia was born, Zeus was in his Greek form.... and when Jason was born, Zeus was in his Roman form)
Nico- his name appears once.... only to be mentioned in the beginning when annabeth is announcing to the camp that Grover, Tyson, Nico, and Thalia, are on the lookout for him ( they still didn't know about the roman camp at that time)
Piper- daughter of Aphrodite and has tha ability to charmspeak- persausive way of speech some daughters of Aphrodite can do, to get people to do anything
Leo- Son of Hephaestus, good with tools, annoyingly funny, and best friends with the main character Jason. He's also immune to fire and can summon it, at will... something no child of Hephaestus has beed gifted with since the 16 th century.