Mika lives in future London, behind The Wall: Solid concrete topped with high-voltage razor wire and guarded by a battalion of Ghengis Borgs, it was built to keep out the animals, because animals carry the plague.
Or so Mika's been told.
But ever since Ellie vanished a year ago, Mika's suspected his world may be built on secrets--and lies. When a mysterious organization starts recruiting mutant kids to compete in violent virtual reality games, Mika takes the chance to search for his twin sister--and the truth.
"A hugely inventive and entertaining read which grabs the reader by the scruff of the neck from the first sentence. It flies along like a laser beam from a blaster and sustains the breakneck pace until the stunning climax. A fresh and exciting take on sci-fi..."--Eoin Colfer
The main characters are twelve but feel much older (maybe sixteen? seventeen?) in their thoughts and actions. This didn't take away from my enjoyment of the story, especially because I decided the extreme nature of their existence must force them to grow up fast, but it's worth noting. The only real drawback for me came when the secret and the overall premise were revealed near the end of the book. I won't spoil it for other readers, but I found it hard to swallow. It didn't feel quite believable enough. However, the story is fascinating, and I will read the sequel. I have to know what happens next. :)