'The Messenger' presents the story of the Arktos, a barbarian race of Icewall, of Kerrick, an outcast Silvanesti elf, and of the ogres who persecute them. Set some four hundred years after the Third Dragonwar, the time-period (or even the setting) have only the barest influences on the story. The drive behind the story is the Arktos' desire for safetly following the massacre of their kinsfolk by ogres. Their trek across Icewall leads them to a happenstance meeting with a Silvanesti elf who saves their lives. Meanwhile, the ogres learn that the the barbarians might be the key in a prophecy of disaster for them, and try their level best to eliminate the threat.
Niles seems to have opted not to make much use of Krynn's distinctive feel (passing references to Silvanesti, use of thanoi, and the odd interference by a cleric of Chislev don't cut it). The book therefore doesn't feel much like a Dragonlance book at all.
That aside, the story is coherent and the characters well-defined. The interleaving threads prevent the story from dragging out (although it's difficult to picture and work with an ogre's lust for an ogress--yuk!). And, of course, being part of a trilogy, there are dangling threads at the end.
Such as, who is Coraltop Netfisher..?