This book is the first in a spin-off from the Percy Jackson series, and I gave it a rating of five out of five. Jason wakes up on a bus and cannot remember anything about his past. He is taken to Camp Half-Bloods along with his friends, Piper and Leo. It turns out they're all children of gods and goddesses, and they must go on a quest to save the world. There is a great force planning to destroy all of the gods and demigods, so the mysterious force can take over the world. Piper is destined to betray her friends, and the gods and demigods must work together to stop the force. Of course, there are prophecies and obstacles along the way that only make matters worse.
The style of this book is just like the Percy Jackson series. Actually, Percy is a missing character in this book, but Annabeth and Thalia are part of the plot. Leo adds a humorous angle to the story with his mischievous personality, but he's also able to create all kinds of machines. A big part of this plot, in case you're slow to notice the hints, involves the similarities and differences between Roman and Greek mythologies. This situation creates a conflict that I'm sure will be a main focus of the sequel.