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 consider another way to survive.