Across six days in 1980, the eyes of the world fix upon London's Iranian Embassy, where terrorists hold over 20 hostages. Next door, a squadron of SAS soldiers sit quietly, primed and ready to raid and rescue those held.

A regiment of British soldiers find themselves held hostage by Sierra Leone's notorious West Side Boys. It is up to British Special Forces to conduct a rescue of a scale not seen since the Second World War.

With Africa's smallest country, Gambia, in the midst of a coup, a select group of British Special Forces are sent in to covertly rescue the absent President's wife and children.