In the land of seven kingdoms there are those who possess special qualities, heightened human powers. They appear normal but are exceptional in some way, perhaps it is their ability to heal or their understanding of animals. Regardless of their gift they have one thing in common, they possess one green eye, and one blue eye. Their powers are known as graces, and they are known as gracelings. Katsa is a graceling. Her grace is a very powerful one that her uncle Randa is happy to exploit. Her grace is killing.