Documentary exploring the career of the controversial former British prime minister, Margaret Thatcher, and the extraordinary political coup which removed her from power. Thatcher, nicknamed the 'Iron Lady' because of her personal abrasiveness and, in the view of some, harsh policies, was disliked by many during her time in power. However, it was her own party that ultimately ended her political career, as Michael Heseltine's leadership challenge sparked an incredible series of events that led to the deposed Thatcher leaving Downing Street in tears.