Marko has come to the ends of the earth to escape a once illustrious past in Bulgaria. So why does a Polish bookstore owner call him a traitor? And who covertly photographed him for the newspaper? Someone knows who he is. They are trying to expose him in his new country, and there is nothing he can do to prevent it. A Change of Key tells the story of a multicultural group of migrants living in an inner-city block of social housing flats in New Zealand. It explores themes of social change and the hardships associated with existing in isolation from one's family and culture. As they struggle through the realities of living in deprivation, Marko and the other migrants find salvation in friendship, community and classical music.