The prime directive has been changed and four billion robots with atomic blasters are poised to take over the universe. Only Robbie Packford, Earth boy and grad

"I was still human, but barely. I glanced down at my fingers. They had curved into claws, sharp claws, the kind that could rend and tear. I tapped my claw again

"Robbie thinks that his alien adventures are behind him, but Jamie, his friend from the planet Kerbosky, thinks differently."