The Son of Neptune

The Son of Neptune is the second book in the Heroes of Olympus series written by Rick Riordan. It is set to be released in the Fall, on October 11, 2011. Riordan reported on his blog that as of April 2, 2011, he is done with the revisions of the third draft. Riordan has confirmed it is about Percy.

Synopsis
In The Lost Hero, three demigods named Jason, Piper, and Leo made their first visit to Camp Half-Blood, where they inherited a blood-chilling quest:

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.

Who are the other four mentioned in the prophecy? The answer may lie in another camp miles away, where a new camper has shown up and appears to be the son of Neptune, god of the sea. . . With an ever-expanding cast of brave-hearted heroes and formidable foes, this second book in The Heroes of Olympus series offers all of the action, pathos, and humor that Rick Riordan fans crave.