The name of this book is The Blood of Olympus by Rick Riordan. There are five main characters: Leo, Jason, Nico, Piper, and Reyna. The main problem is that the giants try to wake Gaea the earth goddess from sleep. To wake Gaea they need Percy and Annabeth’s blood.

The thing that changed the direction of the story was when Percy and Annabeth lead  the attack on Athens. It was a hard decision but as Annabeth says “it’s the most logical choice.”  The giants wake Gaea, but I will not reveal the rest.

I enjoyed this book a lot like when Reyna faced Orion and fought him. I also liked when the gods came to help the seven demigods defeat the giants and when Jason and Zeus fought Porphyrion the king of the giants.  I think that if you like action and adventure you will  like this book. I give this book four stars.