May 1987: a successful SAS ambush results in the deaths of eight IRA terrorists in Loughgall. Knowing that retaliation is certain, and that Gibraltar has been selected by the IRA as a ‘soft’ target associated with British imperialism, British intelligence goes on the alert. Then two IRA members arrive in southern Spain under false names, and an Irishwoman, also using a false identity, visits the changing of the guard ceremony outside the Governor of Gibraltar’s residence. Intelligence believes the ceremony is likely to be attacked, and the British government sends in the SAS. Tasked with preventing the bombing, if necessary by killing the terrorists, the SAS team will need to call into play all their expertise and tenacity in what will become a deadly game of cat-and-mouse.