Part of the blockbuster series from Rick Riordan. In this volume, the young demigods of Camp Half-Blood continue to fight the giants of Gaea, who plans to have two demigods sacrificed in Athens in order to come to her full power. At the same time, Camp Half-Blood itself is under threat from Roman forces. The demigods have no choice but to head to Athens to stop Gaea’s forces.
In a minor subplot, demigod Nico says his crush on Percy is over, but hints that there might be another boy he’s interested in.