The Lost Hero...

HI guys,
I have read all 554\554 pages of it, the name of my book is part of Heroes of Olympus series the book is called The Lost Hero.
Here is a picture of the book: 

The start of the main conflict in the story is when Jason woke up in the school bus not knowing who or were he was.  He was holding hands with some girl and a guy was telling him some joke. It turned out that the girl\Piper was his girlfriend and the boy\Leo was his best friend. When they got to the camp for halfbloods they found out that Piper's and Leo's minds have been tricked by the mist to think that they have known Jason for a long time, but actually they have just met him today for the first time. 
The main conflict is when they are going to get Jason's memory back because it was taken away by Hera the queen of gods, because Jason is a peace offering... Also Pipers father is tied up and hidden away somewhere with a giant threatening piper that if she doesn't kill Jason and Leo he will kill her father and also Percy Jackson had gone missing... So as you can see\read it is a book with a lot of action going on but in the end i predict that Jason's appearance and Percy's disappearance have got something to do with each other. Maybe Percy is at some other camp with no memory. 

Anka