Shania Andrews (Lenora Crichlow) lives on a London council estate and trains for the 200 metres with coach Brian (Phil Davis).

She beats fast-rising Lisa Temple (Lily James) in a qualification race to book her spot at the World Championships. Coach Tommy Southern (Noel Clarke) invites Shania to join the relay squad. Tension intensifies when Shania develops a crush on physiotherapist Carl (Bradley James), who is also the object of Lisa’s affections.