Wisdom's daughter walks alone,
The Mark of Athena burns through Rome,
Twins snuff out the angel's breath,
Who holds the key to endless death.
Giants' bane stands gold and pale,
Won through pain from a woven jail.
That is the prophecy which sends Percy, Annabeth, and their companions on their latest quest in The Mark of Athena: The Heroes of Olympus, Book 3.
Percy Jackson and Jason Grace had been well-liked leaders of their respective camps (Percy at the Greek Camp Halfblood and Jason at the Roman Camp Jupiter) until the meddling goddess Hera/Juno erased their memories and forced them to switch places. Now their memories have been restored, and they have been reunited with their old friends, only to find out that they must set out again, this time to fulfill an ancient prophecy.
Things do not get off to a particularly good start, however, as these two camps have been feuding since, well, forever. Just when it seems as though a ceasefire might happen, a member of Camp Halfblood begins attacking Camp Jupiter, and the Roman Legion seeks to retaliate. Percy, Jason, and five of their friends are able to escape on a flying ship, however, and begin their quest to save the world.
But one member of their party has a secret. Annabeth Chase, daughter of Athena and girlfriend of Percy, has been given a special mission from her mother. A mission to follow the path of Athena, and to avenge a wrong which was once committed against her mother. As the seven set out to save the earth from destruction, Annabeth must choose whether her true loyalties lie with her friends who she knows and loves, or her mother who she respects and worships, but rarely hears from.
Rick Riordan is a former school teacher and bestselling author of three young adult fiction series, each focusing in the mythology of a different ancient culture. Having first found success with his Greek mythology-inspired Percy Jackson series, Riordan has since turned his attention to the worlds of Ancient Egypt and the Roman Empire.