The Battle Of Labyrinth Views
Annabeth (an expert in architecturer–magical and nonmagical) gets her first quest: to go into the heart of the Labyrinth and take Ariadne ’s string from Daedalusa’ workshop before Luke and his cronies can find it. The next day, Annabeth, Percy, Tyson and Grover set off on a perilous quest underground, but not before Percy gets a strange Iris message. In the message, he sees Nico (son of Hades) raise the dead to find a way to get his sister back (his sister died to save Percy in book 3). Nico learns that he can exchange a soul for a soul, and Percy is certain that Nico plans to kill him and exhange his soul for that of his sister.
In between battles, they meet a few friendly faces, like Briares (one of the ancient Hundred-Handed Ones) and Calypso (a beautiful girl forced to live alone on an island because of her fatherh’s transgressions). Grover finds the god Pan, but not in the way he had hoped. And Nico realizes that he must put aside his anger and work with Percy to fight the Titans.
With the help of Rachel Elizabeth Dare, Percy barely escapes Kronos. As soon as they can, Percy, Grover, Annabeth, Tyson and Nico return to Camp Half Blood to prepare for the imminent battle against the Titans. The campers are ready to fight, but their numbers are too few to go up against Kronosn’ massive army. An onslaught of monsters rips through the camp. This battle is like nothing Percy has ever experienced before. Campers die. Things look grim, until they get a little help from two reluctant fighters: Briares, the Hundred-Handed One, and Grover. Briares destroys Kampe in a shower of stones, and Grover unleashes the sound of pure panic (a gift given to him by Pan), which causes the monsters to flee. Daedalus also returns and sacrifices himself to destroy the Labyrinth and close up the entrance into Camp Half Blood.
After the battle, Dionysus (former head of Camp Half Blood) returns, and, in a rare kind act, convinces the Council of Cloven Elders that the god Pan really is dead and Grover should not be exiled. Grover finds a new calling (and grows up a lot). He sets out to convince his fellow satyrs that it is up to them to rebuild the wild places.