This book is about Jason who lost his memories and tries to save Olympus with his friends Leo and Piper from Gaia and the Giants while the gods isolate themselves in olympus and will refuse to comunicate with the demigods
I would recommend this book for those who have not read it yet because it is similar to the older series the 'Percy Jackson and the Olympians'. This is also a very good source if you want to learn about greek mythology at the same time enjoy reading since the book is more fun than reading off from an encyclopedia.The book also talks about good values like friendship, loyalty and trust but their are also parts that are really exiting and makes you hooked on that you wont let go until you finish reading and when your done reading you want to get the next book asap like the fighting parts and the near death experience that the characters experience. You will also find out about the conflict about the demigod camps.
Yes their are more than one camp for demigods which is the greek and roman camps.
I would personally recommend this to the people looking for a replacement to the series Percy Jackson and the Olympians since this is very similar to it and some characters are also in this book like percy who will be one of the main character of the second book and more.