Tensions simmer on a world where Humans blame Yrmaks for their defeat in a recent war. For Celia Whitley, former head of Imperial Security and director of Humans First, it's a great place to incite an interspecies war. All it takes is money and weapons – and she can organize both. Revenge over the Yrmaks who murdered her husband will be hers.

Imperial agent Tian Axmar wants Whitley dead – but her boss insists the woman be brought back to face justice. Whitley's trail had gone cold until Tian, partner Brent Walker, and auralfang, Puss, learn of a stolen cargo of heavy weapons.

Tian and Brent scramble to prevent a war on one world from spilling over to engulf the Empire. But interspecies war is not the only vengeance Whitley wants. Tian, Brent and Puss will need all of their cyborg abilities to prevent the cruelest blow of all.