The seven members of the Argo II have made progress in their quests to defeat Gaea but haven't quite gotten there. Gaea has plans for them and needs two of them to help her rise. They must make choices that will lead to many sacrifices, if they don't the destruction of both their camps is imminent. Gaea must also be stopped, because if she awakens the game is over. The conclusion the Heroes of Olympus series and the last time the readers will meet Percy Jackson and Annabeth Chase, the thrilling finale.
All in all it was a good book. But, and this is a big but, it could have been an amazing book. So here's why it was a good book and not an amazing book. I didn't like the ending. Okay well, I liked some of the ending but not all of it. I felt like it ended too abruptly. Come on, Rick Riordan, this is the last book in the series, never mind that we will never get to meet some of these characters ever again. I'm very glad you didn't go all Veronica Roth on us but you could have elaborated a bit more on what the characters did after the whole she-bang (climax). I had higher expectations since this is the last time we meet these characters which leads me to my next point (complaint), there are no chapters, NO CHAPTERS, from the POV (point of view) of Percy and Annabeth! You gave us nine books, NINE FREAKING BOOKS, to get to know them and love them and then you don't even include their POVs' in the last book? Seriously?! This is betraying your readers Rick Riordan, this is betrayal. Other than these two really important and emotional things, Rick Riordan did what he does best, he enchanted us. I would give The Blood of Olympus 4 stars. I had seen myself giving it 5 stars and raving about how great and awesome it was before I read it.
Here is the Goodreads link to The Blood Of Olympus: https://www.goodreads.com/book/show/18705209-the-blood-of-olympus