"Ultimate Force" returns for an explosive fourth series. New faces join Henno and his troop as they embark upon a series of perilous and high octane missions that will test their courage, loyalty and expertise to the limit.
1. Changing of the Guard With newly appointed Captain Fleming (Sam Callis) in place, Red Troop are dispatched to a former soviet state in a race to save the kidnapped daughters of a British diplomat. As the rest of the troop track the armed rebels through dense forest, an injured Henno (Ross Kemp) is left behind at base where he comes to suspect there is a mole amongst them...
2. Charlie Bravo Red Troop fly to Colombia to train a hapless contingent of local soldiers for an upcoming assault on a cocaine factory. Without warning, the mission is brought forward and Henno begins to suspect a hidden agenda. Will Red Troop be able to save this shambolic platoon from certain death?
3. The Dividing Line Red Troop are drafted in with their American counterparts to apprehend an infamous Al-Qaeda terrorist in the White Mountains of Afghanistan. Tensions run high as the troops battle for control. Can they overcome their rivalry in time to stop the terrorist before he implements his co-ordinated attacks against the West?
4. Violent Solutions Red Troop monitor a suspected weapons dealer who leads them into an armed stand-off with an East End drugs gang. When the gang hijack a tour bus, Becca (Heather Peace) places herself in the line of fire. Can Red Troop stop the hijackers before Becca's true identity is revealed?
5. Slow Bomb When a routine security check on a nuclear power plant goes disastrously wrong, Red Troop find themselves hunting the mercenaries responsible for stealing weapons grade plutonium. As London is shut down, Red Troop race to stop the detonation of a dirty bomb and the certain devastation of the capital.