In this book it goes back to Percy. He wakes up somewhere with amnesia. He starts to wander around but soon gets attacked by gargoyles that keep following him! And the weird thing is their teeth keep breaking whenever the bite him! Also, they are coming back to life in like 12 minutes. He meets an old hippie lady who he has to carry over a stream. He winds up in a Roman demigod camp called Camp Jupiter! He feels like he knows people like this, but this is not quite where he belongs. To learn about his quest and the return of his memory, read the book!
Bottom Line: It’s a good book. I like it because you are meeting a new Percy but not a whole bunch of new personalities. I’d say it should be for 5th and higher.