In the breathtaking fifth and final book in Rick Riordan’s #1 best-selling Heroes of Olympus series, the Greek and Roman demigods must simultaneously prevent Gaea from waking and stop war from breaking out at Camp Half-Blood.
Though the Greek and Roman crewmembers of the Argo II have made progress in their many quests, they still seem no closer to defeating the earth mother, Gaea. Her giants have risen–all of them–and they’re stronger than ever. They must be stopped before the Feast of Spes, when Gaea plans to have two demigods sacrificed in Athens. She needs their blood–the blood of Olympus–in order to wake.
As dangerous as it is to head to Athens, they have no other option. They have sacrificed too much already. And if Gaea wakes, it is game over.