New recruits to the SAS Red Troop, Alex Leonard and Jamie Dow, embark on their first mission, a bank hostage situation.
A three-day combat survival course awaits the ten remaining SAS recruits in their toughest challenge to date.
When three Chechen's break into a pharmaceutical lab where the scientists are working on a vaccine for the deadly anthrax virus, the Red Team is called in.
Jamie is kidnapped in Northern Ireland by terrorists after impersonating politician Bill Gracey. Henno and Pete defy orders and attempt a rescue.
Henno and Twamley are disciplined for defying orders. Johnny Bell is in command as the others search for Glasnovic, a Bosnian war criminal known to have many doubles. Henno and Pete are now training Glasnovic's men.
Red Troop are sent to a former Soviet state, where they are told to work with local forces to rescue an embassy worker's kidnapped daughters. Henno is forced to swallow his pride and submit to the orders of new captain Patrick Fleming - but starts to suspect some of the soldiers helping them in the mission are actually trying to sabotage the rescue attempt.
The team are sent to Colombia, where they are ordered to instruct a motley battalion of local soldiers for an attack on a cocaine factory. The training goes badly, and when the professionals realise their rookies have no chance of success, their only option is to carry out the raid themselves. On arrival at the plant, however, it's clear the workers are expecting an attack.
The special forces from America work with Red Troop to try and find a suspected terrorist in Afghanistan's white mountains. Plans are forced to be changed though at the very last moment.
A deal involving arms and drugs between Dutch and an East End gang goes wrong which sees a London tourist bus being hijacked. Becca poses as a tourist on the bus and her life is soon in anger after on of the hostages is killed.
Dave and Henno are ambushed by Russian nationalists during an exercise at a nuclear plant.