The United States is the most influential country and therefore has influences around the world. In London, in addition to the embassy has some more offices, such as those of the State Department.
In these offices an American woman works, who is in charge of different matters. The offices are bombed, apparently by a terrorist and this woman is lucky to survive, although that will cause problems.
It turns out that she is the only person who survives in all the offices, so some believe that she is a terrorist. Actually she is not a terrorist, so she will have to start fleeing.
In reality, everything is a kind of plot, a conspiracy for which this woman is a loose end that must be eliminated as soon as possible. Thus, she will be persecuted to kill her, so she will have to do everything possible to discover what is happening and save her life.