Tyson (Ashley Chin), an east Londoner in his 20s, looks after his sister by day, and robs luxury flats at night. But his sister s classroom encounters with an inspirational teacher (David Harewood) suggest that even very difficult lives can be turned around. Meanwhile, Tia (Ashley Madekwe), a girl from the other side of the tracks, enters Tyson's life and allows him to glimpse another way of life.