Just a forward warning: If you have not read the other two books in this series, (Lightning Thief and Sea of Monsters) this book will not make any sense to you. In this third book, we learn that Percy, Annabeth, Grover, and newly added member Thalia have a new adventure on their hands. Grover tells Annabeth, Percy, and Thalia that he has found two new half bloods at this prep school. They recruit them, and take them back to Camp Half-Blood. They then find out that Luke has come back and this time he has an even greater army plus some new stronger companions. This will be the most difficult journey the friends have faced yet. I would say this book is for kids age 12+ and for anyone (kids-adults) that likes the mythology style. It is a very funny book. I enjoyed it and I hope you will too.