The breathtaking conclusion to the Trigon Disunity saga. Sixty thousand years ago the Mizari destroyed the first human interstellar expansion but humans have risen again to create a new galactic empire. However, as the new, thriving empire pushes its boundaries outward, the old Mizari threat becomes ever more real. Though guarded by a huge network of defensive systems, the human empire is still very vulnerable to the deadly Mazari Sterilizers that wrecked the first human expansion. Humans debate the future development of a deadly new weapon that can destroy whole worlds. Some see the need for such a weapon as a final defense against the deadliest enemy humanity have ever faced, while others fear the implications of the weapon itself. But while this debate rages, Merritt Thackery races in a stolen ship towards the Mizari homeworld with a vision and a plan that is unlike anything else; one which can destrpuy humankind itself, or provide much needed peace between the two ancient foes.