"The Greek and Roman demigods must simultaneously prevent the earth mother, Gaea, from waking and stop war from breaking out at Camp Half-Blood"--

The global temperature is rising, the ice caps are melting, and levels of pollution across the world have reached unprecedented heights. According to eminent scientist James Lovelock, in order to survive an assault from her dependents, the Earth is lurching ever closer to a permanent "hot state." Within the next century, we will almost certainly be forced to give up many of the comforts of western living as supplies are threatened. Only the fittest-and...

"The Greek and Roman demigods will have to cooperate in order to defeat the giants released by the Earth Mother, Gaea. Then they will have to sail together to the ancient land--Greece itself--to find the Doors of Death"--

In a moment of envy and desperation, Heather Gannis, Gaia's nemesis, allows Gaia's uncle, Loki, to inject her with the fearless serum--and it works, for a while. However, she is growing increasingly distracted and nervous. She approaches Gaia for help. But Gaia has been betrayed too often to let her guard down

At the conclusion of The Mark of Athena, Annabeth and Percy tumble into a pit leading stragith 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 Door 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...