Héros de l'Olympe

Though the Greek and Roman demigods of the Argo II have survived countless trials, they are no closer to defeating the earth mother, Gaea. Her armies are gathering, and her giants have all risen, stronger than ever. They must be stopped before the Feast of Spes, when Gaea plans to use the blood of two demigods - the blood of Olympus - to finally awaken and bring about total destruction. With the gods themselves incapacitated by a split between their Greek and Roman personalities, the fate of the world rests on the shoulders of a few young heroes.

To prevent a catastrophic war between the Greek and Roman camps, the crew must divide its forces. One group will undertake a perilous journey to transport the Athena Parthenos back to Camp Half-Blood, while the other sails for the ancient heart of power in Athens to face Gaea's forces head-on. They have already sacrificed so much, but this final, desperate stand against an overwhelming enemy will demand everything they have left. This is the culmination of their journey, a race against time where failure means the end of everything they know.