The lives of Bodie and Doyle, top agents for Britain's CI5 (Criminal Intelligence 5), and their controller, George Cowley.

The mandate of CI5 was to fight terrorism and similar high-profile crimes. Cowley, a hard ex-MI5 operative, hand-picked each of his men. Bodie is a cynical ex-SAS paratrooper and mercenary whose nature ran to controlled violence, while his partner, Doyle, comes to CI5 from the regular police force, and is more of an open minded liberal. Their relationship is often contentious, but they are the top men in their field, and the ones to whom Cowley always assigned to the toughest cases.

Strike Back é o fruto de uma parceria Reino Unido e Estados Unidos que resultou em uma série de ação militar. A história segue as ações da Seção 20, um ramo secreto do serviço de defesa britânico que opera várias missões de alto risco, prioritárias em todo o mundo.

O relato dramatizado de como a maior unidade de Forças Especiais do mundo, o SAS (Serviço Aéreo Especial), foi formada em circunstâncias extraordinárias nos dias mais sombrios da Segunda Guerra Mundial.

A série dramatiza as histórias de heróis de guerra da vida real, cuja contribuição para a guerra se torna uma pura batalha pela sobrevivência em condições desfavoráveis.

Over the past 60 years Britain's Special Air Service regiment has carried out a wide variety of clandestine missions - from deep-penetration raiding to hostage release operations - which have made it respected and feared for its professionalism and daring. The SAS prides itself on doing its work in the shadows, never allowing any publicity and never claiming credit for any of its extraordinary achievements. But, over the years, sufficient information has emerged for a picture of the regiment's exploits to be clear. This series uses interviews with former members of the SAS; detailed and painstaking reconstructions; and cutting edge 3-D graphics to recreate seven great missions which show why the SAS is today regarded as the world's leading special forces unit.