Narra la historia de un soldado, John Porter, destinado en Iraq en 2003 que tras un conflicto en el que mueren varios compañeros se ve apartado del servicio. Tras 7 años alejado del ejército, John Porter se ofrece para ayudar, como agente al servicio del gobierno, en una misión en la que está implicado un antiguo compañero. Debido a su éxito (la BBC se hizo con los derechos de su emisión internacional) generó otra serie con nuevos protagonistas llamada "Strike Back: Project Dawn", siendo coproducida por el canal inglés Sky y el estadounidense Cinemax.
Contraataque (Temporada 5)

Episode 1 (Episodio 1) 8.3
Guionista: MJ Bassett
Fecha de emisión: 2015-06-03
Duración: 45 min
Sinopsis: The daughter of Thailand's British ambassador is kidnapped, so Stonebridge, Scott and the rest of the team sign up for another do-or-die trying adventure.

Episode 2 (Episodio 2) 8.6
Guionista: MJ Bassett
Fecha de emisión: 2015-06-10
Duración: 45 min
Sinopsis: Section 20 try to track down the real culprits behind the embassy attack, starting with getting information from gangster Ray McQueen.

Episode 3 (Episodio 3) 6.9
Fecha de emisión: 2015-06-17
Duración: 45 min
Sinopsis: Locke works out that his long-time friend is working with the dangerous Yakuza and Office 39. Scott needs protect his son after they find themselves enemy fire.

Episode 4 (Episodio 4) 9.0
Fecha de emisión: 2015-06-24
Duración: 45 min
Sinopsis: Scott has a serious talk with his son whilst the rest of Section 20 form an uneasy alliance with a couple of CIA mercenaries as they go after Shiro and Mei Foster.

Episode 5 (Episodio 5) 8.7
Fecha de emisión: 2015-07-01
Duración: 45 min
Sinopsis: Scott and Stonebridge make a major mistake and fall into the clutches of North Korean agent Li-Na, leaving Locke having to defy orders to get them out.

Episode 6 (Episodio 6) 8.4
Fecha de emisión: 2015-07-08
Duración: 45 min
Sinopsis: Scott and Stonebridge make a major mistake and fall into the clutches of North Korean agent Li-Na, leaving Locke having to defy orders to get them out.

Episode 7 (Episodio 7) 6.9
Fecha de emisión: 2015-07-15
Duración: 45 min
Sinopsis: The battle with Li-Na is now in Europe, as Section 20 look for a way to get back on her trail. Locke ends up getting an unexpected chance to confront his nemesis.

Episode 8 (Episodio 8) 8.3
Fecha de emisión: 2015-07-22
Duración: 45 min
Sinopsis: The team find out that Li-Na is planning to mount a nuclear attack in Europe. Locke puts himself in the firing line after he neglects the mission in order to avenge his son's murder.

Episode 9 (Episodio 9) 8.2
Fecha de emisión: 2015-07-29
Duración: 45 min
Sinopsis: Locke takes Section 20 off the radar, as they defy Whitehall to travel to Geneva where he is convinced that Li-Na and Kwon are preparing to attack the United Nations HQ.

Episode 10 (Episodio 10) 7.0
Fecha de emisión: 2015-07-29
Duración: 45 min
Sinopsis: Scott and Stonebridge are stranded in the Alps with the mercenaries in pursuit. Scott knows that the CIA hide weapons caches across Europe, so they find a telephone at the farm of a retired Austrian soldier Oscar (Wolf Kahler) to call Christy Bryant (Stephanie Vogt), a past acquaintance from Vengeance, for the location of the nearest one, at a nearby dam.

Temporadas

Episodios 6

Episodios 10

Episodios 10

Episodios 10

Episodios 10

Episodios 10

Episodios 10

Episodios 10

Episodios 6