Seven half-bloods shall answer the call,
To storm or fire the world must fall.
An oath to keep with a final breath,
And foes bear arms to the Doors of Death.

We have come down to the most important book in the series (HOO). I have to admit that I'm kinda tired of saying this, but, awesome cover page as usual. Nice to see what the crew looks like in the eyes of the author (Rick Riordan). Our prayers have been answered (at least mine has been) to see the crew in the biggest combat in PJO history.

Again Rick Riordan has done an awesome job. I just wish, we had some bonus stories about the crew of the Argo II-Percy, Annabeth, Jason, Piper, Leo, Hazel and Frank (we'll add Reyna, Coach Hedge and Nico in there too).

The story starts of with Jason introducing his life of difficulties as an old man and then fighting to near death. But this proves to be worth it as the crew finds out about the dangers of traveling through Delphi to reach Greece. Why reach Greece, you ask? To defeat the giants and stop Gaia from waking, of course, all before the Feast of Spes when Gaia is scheduled to wake from her slumber. Nothing else needs to be said there. Meanwhile, Reyna, Nico and Coach Hedge are sky diving into Mount Vesuvius.They need to get to Camp Half-Blood to deliver the Athena Parthenos, as instructed by Athena.

As usual, the heroes fight crazy ghost people, Victory (you'll know what I mean soon enough), Percy's sister (isn't it always Percy's siblings), Orion, Lycaon, Mimas, etc ( its a long list). The heroes eventually reach Athens where they are to defeat the giants, where the giants hope to spill the blood of a male and female demigod- preferably Percy and Annabeth. Cue the fighting. Cue Annabeth's leg getting cut and "spilling [her] blood on the Ancient Stones". Cue Percy's nosebleed (you had to get a nosebleed Percy) and the waking of Gaia. The gods join the fight and defeat the giants. Now its up to the demigods to stop Gaia from destroying the two camps.

In the other side of the world, Reyna, Nico and Coach Hedge get to Camp Half-Blood on pegasi. The Romans start attack Camp Half-Blood even before the heroes arrive. Then Gaia wakes and comes to Camp Half-Blood. The seven demigods of the prophecy, who are slapped by Zeus all the way from Athens sends cheers among both the camps. The rest is based on how they defeat Gaia and Leo fulfilling his promise.