The Heroes of Olympus

The Heroes of Olympus is the second Camp Half-Blood series, preceded by Percy Jackson and the Olympians and written by the same author, Rick Riordan.

The first book in this series is The Lost Hero, and it was released October 12, 2010. It describes the fact that Percy Jackson, the main character from the preceeding series, has been missing for three days. It shows the quest to save Hera, from the giant Porphyrion. Jason Grace, son of Jupiter accompanied by Piper McLean, daughter of Aphrodite and Leo Valdez, son of Hephaestus flies to find Boreas, the god of the northern winds on a bronze dragon named Festus. Later, along with Coach Hedge they fought a fire breathing giant named Enceladus to save Piper's dad. and the king of giants Porphyrion to save Hera. At the end, it is revealed that Percy Jackson and Jason Grace were exchanged, as both the Greek and Roman Camp Half-Blood warleaders, to each other's camp to learn each camp's techniques of war and training. Because Hera believes that they need both side of demigods to unite to fullfill the second great prophecy and to win the war againts the giants. The second book is called The Son of Neptune and is coming in Fall 2011. Rick has planned five books for the entire series, and plans for them to end around 2015.

The series follows the completion of the second Great Prophecy given by Rachel Elizabeth Dare, the new Oracle after the Second Titan War. Gaea and the Giants are the main antagonists.

The Second Great Prophecy
"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."

Books

 * The Lost Hero – October 12, 2010
 * The Son of Neptune – October 4, 2011
 * Book 3 – Fall 2012
 * Book 4 – Fall 2013
 * Book 5 – Fall 2014

Audiobooks
The Lost Hero is available as an audiobook read by Joshua Swanson as of October 12th, 2010, with a play length of 16 hours and 34 minutes.