Book 1 of The Sun Song Trilogy.

It's the year 2089 and everything is altered. The revolutions of the early 21st century have created a world divided - between the Privileged few and the Native (Celtic) underclass. Sorlie is enjoying a typical carefree Privileged teenage life until it is smashed apart by the cruel death of his parents and he is spirited away to live with his ice-cold grandfather at a mysterious island penal colony. Sorlie's discovery that the captives are being genetically altered to remove all trace of their Native origins triggers a chain of shocking events that reveal his grandfather's terrible secrets and, ultimately, the truth about himself.