Annabeth, Luke, and Thalia's Adventure

When some of the campers of Camp Half-Blood have gone missing, it's up to Luke, Thalia, and Annabeth to get the back. There's spy between Camp Half-Blood and Camp Jupiter. It turns out, the missing demigods are being held captive in Camp Jupiter.

While on their way to the camp, they meet the spy. She doesn't tell them her real name so they call her Stuff.

The missing campers are:

~Percy
~Clariesse
~Nico
~Silena
~Rachel
~Zoe

Can Annabeth, Luke, Thalia, and "Stuff" bring the campers back?