In 1838, at the age of 18, young princess Alexandrina's life is transformed when she ascends the throne of Great Britain and becomes Queen Victoria. Suddenly finding herself freed of the repressive shackles placed on her by her mother's advisor, Conroy, she builds a new alliance with the charismatic prime minister Lord Melbourne.
Albert feels he needs a greater role in public affairs, and becomes involved in the anti-slavery movement. Victoria matches wills with the Duke of Sussex to see that her husband is granted more respect, while Skerrett faces a dilemma when she realises that the only person who can save her cousin and child from certain death is the man she trusts the least.
The queen becomes pregnant, and declares that Albert will become head of state in the event of her death. The developments outrage members of the Tory party, who fear a German prince holding sway over the nation and make arrangements to disrupt his visit to the industrial north. The consort finds an unlikely ally in Sir Robert Peel, who seeks royal approval for the rapidly developing railway. At first, Victoria does not approve, but soon changes her mind when she experiences Peel's creation for herself.
A heavily pregnant Victoria is frustrated by both Albert and her mother's attempts to confine her to the Palace. Cumberland arrives in London, hoping that Victoria may die in childbirth, as he is still the heir Presumptive. Determined to show herself in public, Victoria goes for a drive and is accosted by an unhinged admirer, desperate to free her from her ‘German tyrant'. Whilst Victoria is taken aback, she is resolute that it will not frighten her and despite Albert's misgiving, goes out again.
Picking up a month after the birth of her first child, the new series sees Queen Victoria surprise the court when she insists on returning to her duties as soon as possible.Having taken charge in her absence, adoring new father Albert decides not to trouble his wife with worrying news regarding the British soldiers in Afghanistan. However, as the reports worsen, Victoria grows increasingly suspicious that he and Prime Minister Robert Peel are hiding something from her.Determined to reclaim her place with characteristic impulsiveness, Victoria brings in the formidable Duchess of Buccleuch as her new Mistress of the Robes and demands that former chef, Francatelli, return to the palace kitchens.Meanwhile, Albert's family descend on the palace for the Christening of baby Vicky and their dynastic plotting only intensifies Victoria's sense of frustration. Convinced that the truth is being kept from her, Victoria seeks answers from the Duke of Wellington.
The queen suspects that her husband is attracted to another woman, and discovers that she is pregnant with a second child - leaving her concerned that motherhood will dominate her life and reign, at the expense of any other possibilities. Below stairs, new dresser Cleary thinks that the palace is haunted, but Brodie believes there is a natural explanation for the events that have frightened her.
The royal court celebrates the birth of the Queen's second child, but Victoria alone is unhappy as she struggles to bond with her newborn son. A crisis compels Albert to return to Coburg, separating the couple for the first time since their wedding. Skerrett makes a disastrous mistake, while Drummond's relationship with Lord Alfred comes under threat.
As news of the horrific famine in Ireland reaches the Queen, Victoria is adamant that her government should be doing more to help. However, Prime Minister Peel is trapped, knowing that to send food to the Irish would destabilise his party and jeopardise his career. With Albert blinded by his trust in Peel, Victoria begins to question her own convictions.
After a series of assassination attempts, the queen is forced to seek sanctuary far from the palace. She and Albert travel to the Scottish Highlands, an area that has always fascinated her, but proves to be far from the romantic retreat she had fantasised about. However, travelling incognito gives both the royal couple and their servants a freedom they do not often experience.
Albert resents Lehzen's influence over the queen, and fears she is putting the health of their child at risk. The prince also unwittingly creates problems for Peel, who is facing the most important battle of his political career as he takes a stand against the corn laws, only to find that Albert has played into their enemies' hands. When tragedy strikes, personal and political sacrifices must be made. Last in the series.
It is Christmas 1846 and Victoria is uncharacteristically sad as she prepares to face her first Christmas without her beloved Baroness Lehzen, while Albert transforms the palace into a magical festive wonderland as he is gripped by an obsession with staging the perfect family Christmas. But tensions between the couple mount when the prince invites house guests to join the celebrations. Meanwhile, Skerrett inherits a large estate from an estranged uncle.