The IRA and the SAS are, each in its own way, mysterious and deadly organisations One is capable of intimidating and terrorising an entire nation the other is practised in feats of combat beyond the wildest imagination It is 1976 and Ulster is not a pretty place to be Under increasing pressure, the IRA comes up with a master stroke that forces the British Government to take desperate action The SAS are called in, just four men, one of whom has a beautiful wife who is to provide the fateful link between past and present