Keeper in the forbidden cities ( A PJO HOO KOTLC crossover )

After a series of attacks on Sophie and her friends are forced into hiding. With traitors everywhere, Mr. Forkle called on a favor from his friend, Chiron from a place called camp Half-Blood. He agrees to hide the children amongst his campers(oh did I forget to mention that this is a camp for Demi Gods.) With the help of Some Demi Gods, will the elf's be able to stop the neverseen.

This is Going to take place after the Hero's of Olympus and after Legacy before Keefe runs away

Disclaimer:
All of these characters belongs to shannon messenger and rick riordan