Heroes of Olympus,The lost hero, Book One, by Rick Riordan

Book cover

 Jason is a boy who suffers from amnesia. He wakes up on a bus, sitting next to Piper, a girl claiming to be his girlfriend, and a boy, Leo Valdez, who claims to be his best friend. In a field trip to the Grand Canyon, storm spirits attack the three while their supervising teacher, Coach Gleeson Hedge, reveals himself to be a satyr, and fights for their lives. Jason surprises himself by using a sword disguised as a coin to fight off the spirits, and Coach Hedge is captured while defending them. At the height of the battle, two pegasi land next to them carrying strangers: Annabeth and a boy with a tattoo of a rainbow named Butch, a son of Iris. Annabeth is angry because Percy is missing.

• It will be  good series i gave it  perfect score but anyway it was strong when we see 3 demigods but one is roman 
• we MEET A NEW DIRECTOR LUPA
•   one Is KIDNAPPED
• more cabins
• different gods
• Olympus is closed
• no more new york for now
• new enemy
• no titans
• new monsters
• romans
• 2 camp half bloods 

Well i am saying good bye for now here is a link to the site for fun  password is newhero .
here is a site about ithttp://disney.go.com/disneybooks/heroes-of-olympus/ check out this also percy jackson