What will happen when Percy, Annabeth, Leo, Jason, Piper, and Hazel reunite after years of never seeing each other, when multiple cities have been invaded by an army of greek monsters and demigods that could be possessed? Even weirder why can the mortals see through the mist? Percy and Annabeth have broken up after a nasty fight. Jason and Piper left each other when she chose her career over Jason. Leo and Hazel are barely sticking together. Will Percy and Annabeth get back together? Did Jason and Piper ever lose their love for each other? Will Leo and Hazel stay strong? All these questions will be answered, but the ultimate question still remains. Will they all survive the end of the world? Will they survive Armageddon?

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