.||The Curse of the Sea||.

Percy and the seven have just defeated Gaea and were summoned to Olympus. The gods wanted to thank them for their bravery and loyalty, and offer each one of them the gift of immortality. Piper, Jason, Hazel, Frank, and... Annabeth all accept the gift. Except for Percy. Percy then feels betrayed and gets into a fight with Annabeth, who uses her new powers in vain on Percy. Percy then disappears while his friends are desperately trying to find him, while trying to break the curse.