In this extremely cool 3rd book of Percy Jackson and the Olympians. there were lots of surprises. There were lots of fighting and story. This was one of my favorite book of series. There was many Bad obstacles but they overcame them all. in this book, Percy, Annabeth,Thilia and Grover goes to a military school to look for two half-bloods! these half-boods are very strong. When they found the two half-bloods, they found out that they werent the only "people" looking for them. The two half-bloods was brother and sister. They had to fight a dangerous monster to get to the them. long the process one of the members was lost.
So the remaining crew took the two half-bloods to Camp Half Blood. They recived a quest to find the lost member. So they asked the Obstle for the profecy of the quest. "Only 5 could come in this quest, one shall be lost, and one shall die by their parents hands". later on the book, they came across the junkjards of the Gods. In that junkyard a new creature raised, and a part of the profecy came alive.
At the end the remainign 4 troop faced one of the dangerous monster thay ever faced yet. it was released from its prison and the 4 worriors had to face it. in the fight they encountered a lost friends and a old enemy!