We are alone in the universe. Generations of explorers have proven the fact. Colonies have bloomed and faded. The only life encountered has been creatures no more advanced than the primitive life forms of Old Earth.
We are alone.
We are unique.
Until we aren't.
Now we have company. The Tunn. These beings live by the adage of the tooth and claw. They believe in survival of the fittest. And they want us dead.