The Krays is a film based on the lives and crimes of the British gangsters Ronald and Reginald Kray, twins who are often referred to as The Krays and were active in London in the 1960s.
Prison inmate Danny Monk does not foresee the circumstances when he barricades himself in a cell during a prison riot with Prison Officer Green as hostage.
When the British government orders the assassination of an Air Ministry official suspected of leaking top secret intel, their top assassin assigned to the job discovers there may be more to the hit than meets the eye.