Saviors of Chaos
Annabeth, Piper, Hazel, Calypso, and Will are betrayed by everyone. When they are thrown out of camp one person offeres them refuge. That person is Chaos, creator of the galaxies.
I know its a bad description, but don't judge me! I'm new at this. This takes place after the blood of Olympus so if you haven't read it yet there are major spoilers.
Disclaimer: this is for the whole book so I don't have to write one every chapter. I don't own the Percy Jackson and the Olympians series or the Hero's of Olympus series, Rick Riordan does, and if I did I might not have left the whole series on a mini cliff hanger. Might just might.
Under editing as of 3.20.2016