I read and loved the Percy Jackson series, so I was wondering where Riordan was going to go with this tale. Well, he went straight to the bank with this one; this book bodes well for the new series "Heroes of Olympus".
The action starts immediately. Jason is a boy who is suffering from amnesia. He wakes up on a school bus not remembering anything from his past, including anything about who he is. He is sitting next to Piper McLean, a girl who is apparently his girlfriend, and a boy, Leo Valdez, who claims to be Jason's best friend. The bus is taking them, along with the rest of their grade at their school, the Wilderness School, on a field trip to the Grand Canyon. The Wilderness School is apparently a school for delinquents.
There are some similarities to 'The Lost Hero' in 'The Land of Nod - The Artifact. In Riordan's 'TheLost Hero' Jason suffers from amnesia. In 'Land of Nod - The Artifact' Jeff Browning feigns amnesia in an effort to conceal that he is not from that world. Also, Jeff, too, has mysterious powers that aren't fully explained but they are hinted at, rather strongly, as being more fully explained at a later date.
Hoover blends science and technology with mysticism and prophecy to create a world that is both familiar and strange. There are many different issues keeping Jeff from finding his father, from useless politicians whose self interest outweighs the greater good to a war that he eventually finds himself in the middle of.