There is a poisoning at a reception. The police start to think that the real target is a civil servant who forged an environmental report who also was present at…

Amid a growing challenge to her power, Thatcher fights for her position. Charles grows more determined to separate from Diana as their marriage unravels.

Margaret Thatcher visits Balmoral but has trouble fitting in with the royal family, while Charles finds himself torn between his heart and family duty.