Humans must be silent. Humans must be obedient. Humans must be good.
All his life, John has tried to live by those rules. Most days, it's not too difficult. A hundred and twenty years after The Fall, and a hundred years after the grays swept in to pick the last dregs of humanity out of the wreckage of a ruined world, John has found himself bonded to Martok Barden nee Black Hand, one of the "good" grays. Sure, Martok is broke, homeless, and borderline manic, but he's always treated John like an actual person, and sometimes like a friend. It's a better deal than most humans get.
But when Martok puts John's bond up as collateral against an abandoned house in the woods that he hopes...