Nearly a century after the long-awaited death of the infamous hero Percy Jackson, Camp Jupiter has been destroyed; the few refugees fled to Camp Half-Blood in hopes of rebuilding their lives and continue their training. DAHLIA is the daughter of Jupiter and one of the refugees who managed to find her way to the camp. ALEX is the son of Hecate and an unknown telekinetic sword wielder. AGATHA is the daughter of Demeter who hates Camp Half-Blood for killing her parents, but when she begins to develop feelings for one of the campers, she is forced to chose which side to fight for. GOLDEN KATANA is the son of Chaos, or so he claims. CRYSTAL is the daughter of Dionysius who is figuring out how to control, among other things, her ability to heavily influence people's minds through suggestion. CASH is the son of Hephaestus, a witty engineer, and brilliant with metal. EVELYN is the daughter of Athena, a super genius who is bent on vengeance and enjoys nothing more than to smell the smoke of burning demigods and see the camp's soil soaked with their blood. When Camp Half-Blood is under siege from an army of monsters, the half bloods sneak out and take arms against Evelyn. In over their heads, they must fight to end the war before it escalates and completely destroys their beloved camp. But taking down a villain turns out to be much harder than they originally thought. Will they be able to stop Evelyn and rescue Camp Half-Blood along with its campers, or will she save them the trouble by tipping the hourglass and shortening the time between the present and the camp's final hours?