Percy Jackson and the Olympian, The battle of THe Labyrinth

Plot summary

After being attacked by Empousai cheerleaders at his new school, Percy returns to Camp Half-Blood and learns about the "Labyrinth", part of the palace of King Minos in Crete that, according to Greek mythology, was designed by Daedalus. He also meets the camp's new swordsmaster, Quintus, who is later revealed to be Daedalus. During a game against giant scorpions at the camp, Annabeth and Percy accidentally find an entrance into the Labyrinth. Percy soon learns that Luke had used this entrance before and will try and lead his army through the Labyrinth straight in to the heart of Camp Half-Blood.

Using the Labyrinth, Percy, Annabeth, Grover, and Tyson must find Daedalus so that Luke cannot get Ariadne's string, thereby foiling Luke's invasion. Ariadne's string is used to navigate the Labyrinth. Percy and his friends encounter Kampe, a half woman, half-dragon monster, and free her captive, Briares the Hundred-Handed One, who is Tyson's idol but disappoints him by being too scared to help them. After an encounter with the goddess Hera and a battle on the farm of Geryon, the group are reunited with Nico di Angelo, son of Hades, who still hates Percy for the death of his sister Bianca, but is convinced to put it behind him by the summoned ghost of his sister. Following a hint from the Greek God Hephaestus, Percy travels to Mt. St. Helens, where he finds telekhines, which Percy calls "sea demons". Percy attacks the telekhines and they chase him. Percy finds Annabeth and they have a short argument during which Percy tells Annabeth to flee. They kiss, and Annabeth disappears. In an attempt to escape the telekhines, Percy causes Mt. St. Helens to erupt, draining his energy in the process. After being treated for burns by Calypso, Percy gets the help he needs from a mortal girl named Rachel Elizabeth Dare, who is able to see through the Mist. Grover also finally finds Pan, but the god of the wild is dying and wants Grover to tell the other satyrs that they must save the natural world themselves - his spirit passes into all present (Grover in particular) when he dies. They finally discover that Quintus, the mysterious new sword instructor at Camp Half Blood, is actually Daedalus (who has attained a sort of immortality by putting his life-force—his animus into a robot body) and that Kronos has gained a body by possessing Luke. Kronos finds out that Nico di Angelo is a son of Hades and also could be the child of the big prophecy. Luke has already reached Daedalus and got Ariadne's string. Using the magical instrument, he leads his army and attacks camp. Grover comes to the rescue and causes a Panic to scare away the enemy. After the battle, Daedalus sacrifices himself to close the Labyrinth, which is tied to his life