Travellers

Refugees from the worlds of the galactic centre are seeking a planet on which to make a new home far from the reach of pursuers. They are running dangerously low on resources, and with nowhere else to go the only suitable planet they have found is already inhabited. Its civilisation is dangerously unstable.
Can Taithur, the leader, morally and ethically justify taking the planet, potentially destroying the indigenous and sentient inhabitants?