Set in a dangerous, alternate world where racism divides society, follows two young people Sephy and Callum, who are divided by their colour but united by love. Sephy is a 'Cross', a member of the black ruling class and daughter of a prominent politician. Callum is a 'Nought', a white member of the underclass. The two have been friends since early childhood but their relationship grows ever more complicated as they come of age. It's the story of two families separated by power and prejudice but forever entwined by fate.