You are falling straight into the darkest, most terrifying pit in the mythological world. Percy Jackson and Annabeth Chase have just plunged into the monstrous depths of Tartarus, surrounded by the very monsters they previously vanquished, with no clear way to survive. Up on the surface, the remaining five demigods of the great prophecy are completely consumed by grief, but they have absolutely no time to mourn. You must set sail for ancient lands and fight your way through the earth mother Gaea's vicious armies to find the mortal side of the Doors of Death. Percy's final desperate instructions were clear: the doors must be sealed from both sides to stop the giants from waking Gaea and destroying everything. If you can survive the brutal monsters guarding the entrance in the mortal world, and if Percy and Annabeth can somehow survive the absolute horrors of the Underworld, you might just save Camp Half-Blood. Step into this heart-pounding adventure where every single choice is a matter of life or death.