Annabeth and Percy have tumbled 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 both sides and prevent the giants from raising Gaea. But, Leo wonders, if the Doors...

A fifteen-year-old boy who has spent his entire life trying to avoid attention finds himself in the middle of a millenia-old struggle between titanic forces when he is simultaneously recruited by an exclusive prep school and followed by sinister agents.

"Will West and his friends enter the alternate universe of the Never in order to rescue Will's friend and mentor Dave from the dangerous and deadly creatures from beyond"--

Three short stories in the form of diary entries, plus interviews, puzzles, and games, reveal new insights into the world of Percy Jackson and the other heroes of Olympus.