Set in and around the corridors of power, Bodyguard tells the fictional story of David Budd (Richard Madden), a heroic but volatile war veteran now working as a Specialist Protection Officer for the Royalty and Specialist Protection Branch (RaSP) of London's Metropolitan Police Service.When he is assigned to protect the ambitious and powerful Home Secretary Julia Montague (Keeley Hawes), Budd finds himself torn between his duty and his beliefs. Responsible for her safety, could he become her biggest threat?