The main character of the book is Derek Straker, a mechsuiter for the Hundred Worlds in their fight against the alien Hok invaders. A mechsuit is a gigantic robot battlesuit, and Straker’s neural link with the device lets him wield with fearsome efficiency. After fighting in a catastrophic defeat for the Hundred Worlds, Straker realizes that both the Hundred Worlds and the Hok are not what they seem to be, and he must choose whether or not to knuckle under to one cruel system or another, or find a way to forge his own path.
On a related note, Lastredoubt is always intrigued by how Rod Walker writes of himself in the third person. Lastredoubt couldn't keep that up for very long.