The House Of Hades

At the conclusion of "The Mark of Athena," "Annabeth" and "Percy" tumble into a pit leading straight to the Underworld. The other five demigods have to put aside their grief and follow "Percy's" instructions to find the mortal side of the "Doors of Death." If they can fight their way through the "Gaea's" forces, and "Percy" and "Annabeth" can survive "the House of Hades", then the "Seven" will be able to seal the "Doors" from both sides and prevent the giants from raising "Gaea". But, "Leo" wonders, if the "Doors" are sealed, how will "Percy" and "Annabeth" be able to escape? They have no choice. If the demigods don't succeed, "Gaea's" armies will never die. They have no time. In about a month, the "Romans" will march on "Camp Half-Blood." The stakes are higher than ever in this adventure that dives into the depths of "Tartarus.