A young Princess Elizabeth marries Prince Philip. As King George VI’s health worsens, Winston Churchill is elected prime minister for the second time.
With King George too ill to travel, Elizabeth and Philip embark on a four-continent Commonwealth tour. Party leaders attempt to undermine Churchill.
With Elizabeth in a new role, Philip tries to assert some power. Churchill wants to delay the coronation. King George’s disgraced brother arrives.
When dense smog cripples London for days and creates a serious health hazard, Churchill’s inaction leaves him vulnerable to his political enemies.
Elizabeth rejects protocol by appointing Philip to coordinate her coronation, but his ideas create conflict. The Duke of Windsor returns to London.
Margaret and Peter come to Elizabeth with a request. With a royal scandal about to break in the newspapers, the Queen Mother intervenes.
As the Soviets test the H-bomb, both Churchill and Eden have major health crises. Angry about her inadequate education, Elizabeth hires a tutor.
Elizabeth and Philip go on an exhausting world journey. Margaret takes over some of her sister’s official duties and tries to liven things up.
As tensions with Philip increase, Elizabeth spends time with her old friend Porchey. Churchill’s portrait is painted for his 80th birthday.
Margaret and Peter are reunited, but another obstacle stands in their way. Elizabeth is torn between her duty as Queen and her love for her sister.
Elizabeth grows concerned as Labour Party leader Harold Wilson becomes prime minister amid anti-monarchy sentiment and rumors of his possible KGB ties.
With Britain in need of a financial bailout from the U.S., Elizabeth reluctantly enlists Margaret to assist in winning over President Johnson.
Following a tragic accident at a Welsh mining village that quickly becomes political, both Elizabeth and Wilson struggle with their responses.
As the royal family makes a documentary to boost their image, an unexpected guest arrives from Greece, throwing a wrench into Philip’s publicity plans.
Pursuing improvements in her racehorse management, Elizabeth imagines the life she might have had. Meanwhile, a plot against her government is brewing.
Amid rising Welsh nationalism in the run-up to his investiture as Prince of Wales, Charles is sent to spend a semester there and learn the language.
As the first men land on the moon, middle-aged Philip feels dissatisfied by his lack of achievement and begins searching for inspiration.
As Charles begins dating Camilla Shand, Elizabeth considers visiting an ill Duke of Windsor in Paris, whose destiny changed when he met Wallis Simpson.
While a government stalemate with mineworkers leads to nationwide power cuts, Charles's family intervenes in his deepening relationship with Camilla.
As her marriage disintegrates, Margaret seeks comfort elsewhere. But her fragile state of mind and lack of family support make true happiness elusive.
As Philip leaves for a long tour, Elizabeth makes an upsetting discovery. Prime Minister Eden wants to strike back after Egypt seizes the Suez Canal.
Elizabeth feels disconnected from Philip. Eden copes with international pressure and ill health. An interview stirs up harrowing memories for Philip.
Palace insiders try to prevent a scandal that could reflect poorly on Philip. Eden faces censure from his cabinet and the press.
When Elizabeth and Philip throw a grand party for their 10th anniversary, both Margaret and the new Prime Minister experience romantic tribulations.
After Elizabeth makes a tone-deaf speech at a Jaguar factory, she and the monarchy come under public attack from an outspoken lord.
A secret World War II document opens Elizabeth's eyes to grim realities about a family member. The Duke of Windsor campaigns to re-enter public life.
A letter from Peter Townsend spurs Margaret to make a bold proposal. Elizabeth has good news that causes complications for Margaret.
Inspired by Jackie Kennedy and against her government's wishes, Elizabeth takes an unconventional approach to resolving an issue with Ghana.
Philip insists that Prince Charles attend his alma mater in Scotland and reminisces about the life-changing difficulties he experienced there.
A salacious government scandal hits close to home for Elizabeth and Philip. Elizabeth retreats to Scotland for rest during a difficult pregnancy.