New recruits Jamie Dow and Alex Leonard face a baptism of fire when they join Red Troop, who are called from a hostage rescue exercise to take command of a bank siege where the stakes are high and all too real.

As Red Troop bury Sam Leonard, a lone gunman attempts to assassinate a prominent European banker using a sniper rifle; the SAS must find the gun and the British anti-globalist group suspected of carrying out the shooting.

Ten new recruits face a tough three-day combat survival course in the Welsh mountains, but when two soldiers turn up dead, it appears a greater danger lurks in the woods.

Red Troop is called to a pharmaceutical laboratory after three Chechens break in, armed with enough anthrax to kill thousands.

Jamie is kidnapped during a violent ambush in Northern Ireland while impersonating a politician whose life is in danger.

Henno and Twamley get kicked out of the unit despite saving Jamie's life in Ireland; the team is dispatched on a classified mission to Bosnia.