Mankind has been banished from Earth for decades. In this time Warblegrub, an interstellar gardener, has been cleaning up the pollution and waste left behind.

Home always beckons and humans return to Restricted Planet One as an army, resolved to reclaim Earth, aware that they are disobeying intergalactic law in the process. Warblegrub must help a species set on its own destruction to save itself, but there are others that would sooner be rid of what many beings consider a self-absorbed pest.

Humanity’s aggression may be what secures its doom as the soldiers move across a landscape where their world is fading back to nature.

But, there isn't no hope!