When two married business executives having an affair are blackmailed by a violent criminal, they are forced to turn the tables on him to save their families.

Stephen Lawrence was a black London teenager murdered by white racists in 1993. His parents fought to have the crime properly investigated, culminating in a judicial enquiry into the event itself and also the inadequacies of the ensuing investigation by the London Metropolitan Police.

Set against the rising wave of gun crime in Britain, Gunrush sees a father driven to take the law into his own hands after his daughter is shot dead.