12-year-old Noah loves to play computer games. And he’s good at it.

One day, he wakes up in a place he doesn’t recognize.

He doesn’t remember how he got there, and he has no idea how to get back home.

The only thing guiding him is a watch that sends him messages.

In this book, the watch wants him to eliminate 99 people on an island. Is Noah up to the task? And what happens if he fails?