Nathan has survived the years since his parents' murders by visiting an equine assisted therapy centre every day, where a devoted mare provides him with sanctuary from his demons. When she and the other therapy horses are taken from the centre by the police and herded out of The City Of Glory, Nathan is ready to kill or be killed.

But then the enigmatic Tania takes his hand and he remembers another time. Another life. Then, he was one of the Horse-Bonded, one who failed to fulfil his potential. Now, he is a scientific research assistant barely clinging to sanity. The fate of The City Of Glory's citizens depends on him staying alive but in order to do that, he will need to embrace both his memory of who he really is, and the help of the horse who won't allow death to thwart them both...