Chronologically, this is set after The King Beyond the Gate, and before Winter Warriors, making it the next-to-last book in the Drenai Saga. It is set in New Gulgothir, the pitiful remnant of the Gothir nation, that we first saw the Nadir crush at the beginning of Legend.
In this novel, a boy's quest to rescue a fellow villager from slavers crosses that of Chareos, Maggrig, Finn, and Belzer, the four survivors of an epic stand against the Nadir horde, led by Tenaka Khan. Ever since, the mysterious circumstances of that survival have dogged them, and now they learn the vast cosmic reason for their survival.
This is, in my opinion, Gemmell's second best novel (only to be bettered by Legend). He writes best about how people go about dying...not the "littering of bodies", necessarily, but the decisions and reasons people make, and the circumstances they face, and how they present themselves. It's an utterly beautiful novel, and it sets up another great story that's itching to be told.
I heartily recommend this novel.