Are you ready for another epic battle with Percy Jackson? Then you should read The Battle of Labyrinth by Rick Riordan. This summer Kronos' army is getting stronger, while the gods' army is not getting much stronger. Percy has to stop Kronos from rising up and taking over the world and destroying almost everything in his path.
Percy also makes some new friends and enemies starting with two empousa, who show up at the school and try to kill him. When Percy goes back to camp, he meets a half-blood named Quintus, the new sword instructor. While Percy and the other campers are battling giant scorpions they discover an opening into the labyrinth right in Camp Half-Blood. This underground maze is beneath the western world and is crucial in evading Kronos' army. Nico, son of Hades, also returns summoning the dead. What will be the prophesy? What will happen in the labyrinth? Find it all and more in the forth book of the series, Percy Jackson and the Olympians.