Eleven-year-old Harrison Opoku, the second best runner in Year 7, races through his new life in England with his personalised trainers - the Adidas stripes drawn on with marker pen - blissfully unaware of the very real threat around him. Newly-arrived from Ghana with his mother and older sister Lydia, Harri absorbs the many strange elements of city life, from the bewildering array of Haribo sweets, to the frightening, fascinating gang of older boys from his school. But his life is changed for...