He has no name, really, or a permanent home; just Number 4, and his home was a planet in a different galaxy, that got taken over by another alien race. One month he's Broden living in Kansas, the next he's Zak in Montana. 4 has to move yet again, to stay as far away from the other alien race searching to kill him. John (which is his new name) settles in a new town in Ohio and when he finally feels at home, they come to kill him, but he and his friends fight back and stop them.
I thought it was a pretty good book. It was especially interesting with all the different alien people on Earth, with each race trying to kill each other.
If you like characters that are far different from everyone else and action, you would really like this book. This book made me want to never put it down, it was so good!
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