Episode 3 of My Lady Jane opens with Jane poring over dusty tomes, her eyes desperate for a clue to unravel Guildford's Ethian curse. She begs Guildford to recall the genesis of his transformation, but he remains silent, his lips tight with secrecy. Jane insists he try to harness the curse, yet Guildford declares he would rather be free of it than struggle with its unruly nature.
As the first light of dawn peeks through the windows, Jane attempts a powerful spell, her voice a prayer for it to halt Guildford's equine metamorphosis. But the spell falters, leaving Jane's heart heavy with disappointment. Her mind races with possibilities, searching for a solution, all the while a sinister ransom note is discovered, its threat hovering over Susannah's life.
Jane ventures into Guildford's ancestral home, hoping to uncover a trove of gold or silver, but finds only the echoes of emptiness. The housemaid, who doubles as Guildford's caretaker, offers no help, leaving Jane to pace anxiously, waiting for Guildford's return to his human form.
Meanwhile, Lord Dudley learns of the King's passing and orders the prison guard to produce his son, Stanley. Bess arrives to meet Edward, but the guards intercept her. She tries to engage Seymour in conversation, but he turns a deaf ear, returning to his illicit affair with Mary. He deceives Mary, claiming to hold Edward's will, while secretly ordering two royal guards to eliminate Jane and Guildford.
Stanley informs Dudley that the will is missing, pleading with him to seek Frances's assistance. But Frances dismisses Stanley's pleas, claiming she has no time for such trifles, as she prepares Katherine's marriage to Duke Leicester.
As night descends, Guildford shifts back to his human form. Jane pleads with him to pay the ransom and save Susannah, but Guildford refuses, stating his family's coffers are empty. Jane's heart shatters, realizing her marriage to Guildford was merely a financial alliance.
Determined to rescue Susannah, Jane sets her sights on the gleaming silver cutlery from the house. She prepares to brave the forests alone, but Guildford, unwavering in his devotion, joins her side. Mary, sensing opportunity, whispers to the royal court that King Edward's health is failing, a hint that she is eager to ascend to the throne. When Bess inquiries about her brother, Mary deceitfully claims that Edward has perished in a fall from a window, shattering Bess's composure while Mary revels in her impending coronation.
As Jane and Guildford traverse the woods, their journey is punctuated by heated arguments. Their sparring culminates in a thrilling duel, where Jane emerges victorious, pinning Guildford beneath her with two gleaming knives in hand. Their passionate romance is suddenly interrupted by the sight of Susannah's hiding place.
Upon discovering Susannah, Jane realizes that she had not been kidnapped. Instead, Susannah had sent the ransom note in a devious attempt to extort money from Jane, who held her dear. Jane confronts Susannah, accusing her of betrayal, but Susannah retaliates, claiming that Jane never treated her as a true friend, merely using her for her own gain. Jane, ashamed of her selfishness, offers a heartfelt apology.
Meanwhile, Seymour concocts a spurious will, aiming to usurp King Edward's genuine testament. Frances, burdened by guilt for marrying Katherine to her uncle, finds herself mocked by Margaret, who chastises her mother for treating Jane and Katherine as mere pawns in a game of wealth and power. Stanley attempts to distract Frances with seduction, and his efforts are surprisingly successful.
On their return journey, Jane and Guildford are ambushed by the royal guards. The couple, united in purpose, fight back valiantly, driving the guards back and fleeing towards the palace. The intensity of the encounter ignites a passionate embrace in the woods, which continues unabated within the confines of their home as they seek to consummate their love.
However, Jane regained her composure and addressed Guildford, revealing that she could not engage in sexual relations with him, given their imminent divorce. On that fateful night, Guildford returned to Jane's chamber, recounting the moment he first transformed into a steed. He begged Jane to refrain from inquiring about it, as the day marked the murder of his mother, a traumatic event he could not bear to discuss. Jane solemnly vowed never to mention it again, feeling a profound sympathy for his plight. As the dawn neared, Guildford retreated to the stables, his human form gradually transforming into a horse.
The following morning, Duke Leicester lay slumbering in the dining hall, having indulged excessively in alcohol the night before. Margaret, in a daring move, suffocated the Duke in his sleep, sacrificing herself to save her sister from the unwanted union with their great-uncle. Katherine, watching the scene unfold, was horrified, yet Lady Frances dismissed the incident, never uttering a word about it again.
Mary and Seymour insisted on summoning the council, eager to read Edward's will and proclaim Mary as the queen. But Petunia, in her canine form, swiftly snatched the genuine will from Bess, who had stolen it to safeguard it. Petunia entrusted the will to the palace guard, who read it aloud to the council. Mary shrewdly uncovered Seymour's deception as Jane was declared Edward's successor. The episode culminated with Jane learning of Edward's passing and her coronation as the Queen of England.
