Devastator

Jain thought he'd never go back.
Ten years had passed since he last had dealings with humans and their machines. He was happy. He'd built a base for himself and his Void Warriors around the barren moon of a gas giant, where they planned to live out their immortal days in peace.
And then humanity came looking for them.
Hunting them.
Now they have no choice but to return.
But what they find waiting for them in human territory will make them wish they'd never left their new home.