Episode 3 of "The Buccaneers" unfolds amidst the lingering echoes of Theo's proposal, encapsulated within the confines of a gracefully gliding carriage. It serves as the chariot for the future Duchess Nan, accompanied by Conchita and Mabel, as they embark on a journey to the majestic castle perched in the heart of Cornwall. Nan, though having accepted Theo's hand in marriage, finds herself enveloped in a fog of confusion and skepticism. She ponders deeply on the nascent stages of their understanding, questioning whether their nascent bond can withstand the weight of a lifetime commitment, fraught with duties and obligations. The specter of future mishaps looms large, casting a shadow over her joyous occasion.
Conchita, with a whimsical smile, whispers her belief that the true essence of "knowing" unfolds only after the sanctity of marriage ties two souls together. Nan's inner turmoil intensifies, swayed by her ambivalent feelings in Theo's presence. Their chemistry is undeniable, a fiery spark that ignites passion—but is this fiery inferno sufficient to quell the towering mountain of responsibilities awaiting them at the altar?
Before disembarking, Conchita confides in her companions, unveiling her plan to don the mask of the perfect daughter-in-law for Richard's parents, catering to their every whim and fancy. This strategic charade, she hopes, will smooth over any familial tumult and draw her closer to Richard's heart.
As Nan steps into the grandeur of the castle, the overwhelming reception and the palatial facade envelop her in awe and trepidation. Sensing the impending storm within the castle's walls, she bolts towards the soothing embrace of the beach, seeking a moment of solitude to catch her breath. To her astonishment, Theo stands there, mere steps away, his keen eyes instantly discerning the discomfort etched on Nan's visage. He acknowledges the haste of their engagement, humbly apologizing and offering her an escape clause—a chance to decline his proposal if she finds herself out of place at the Duchess' exclusive ball that night.
Meanwhile, whispers of financial ruin hang over Honoria and Richard's parents like a dark cloud. They overlook Conchita's American flaws, embracing her with open arms merely to alleviate their impending bankruptcy. Conchita's newfound demeanor, a blend of moderation and grace, pleasantly surprises them. However, a bombshell drops when news of Seadown and Jinny's elopement ripples through the air. Nan, torn between disbelief and confusion, knows Jinny's character too well to fathom such a rash decision. She seeks confirmation from Jinny herself, but Seadown intercepts, shielding the truth from her grasp.
Jinny is utterly enchanted by him, yet remains blissfully unaware of his true demeanor. Honoria is thrilled to reunite with Mabel, but Mabel remains unfazed by her nonchalant comments about her parents' exploitation of the Americans. Nan undergoes a formal introduction to the Dowager Duchess, an encounter that, while not overtly tense, carries an air of significance in Nan's demeanor. She is acutely aware that the Duchess holds a position of unparalleled importance in the castle, second only to Theo. Gaining her trust is paramount to securing her blessing for the marriage.
Nan still has miles to traverse in mastering the art of embodying Theo's wife. They share an intimate moment as Theo unveils his paintings to her. Spontaneously, they embark on a horseback ride along the breathtaking coastline of the beach. However, Nan's heart skips a beat when she encounters Guy, who reveals himself to be Theo's lifelong best friend! This unexpected twist adds a layer of intrigue to the narrative.
Nan finally secures a private conversation with Jinny, who reassures her fears of being manipulated by Seadown, a figure she holds in disdain. Guy inadvertently interrupts their conversation, catching Nan in a partially dressed state. Her primary concern is his potential to betray her secrets to Theo. Guy asserts unequivocally that he has never deceived his best friend and emphasizes that revealing the truth, when the time comes, would tarnish his social standing. It would be a scandal that could ruin him, urging Nan to come clean with Theo to preemptively address the situation.
Nan is officially introduced to the attendees at the Ball as Theo's fiancée, and the room resonates with murmurs of approval, a crucial aspect of their impending nuptials. The dance begins in a traditional manner, breathing new energy into the room.
Conchita senses a shift in Richard's parents' attitude towards her following Jinny's arrival, believing it stems from the color of her skin. She confronts them, but they turn a blind eye to her plight, leaving her to flee the room in tears. In the pouring rain, Conchita rushes towards the cliff, with Richard hot on her heels. Nan, somewhat dismissively, labels her actions as a "chaotic mess," suggesting she often resorts to such dramas for attention. Yet, Richard's resolve to declare his love remains unshaken. Catching up with her, he proposes a temporary move to New York to rekindle their lost romance. Overjoyed, Conchita clashes with Nan upon her return, defending her decision. Meanwhile, Honoria and Mabel share a tender kiss in the shadows, confirming their mutual affection.
Guy engages Nan in a heartfelt conversation about her predicament. He vows to keep her secret from Theo but insists she must take matters into her own hands. Nan confirms her intention to marry Theo at the beach. As she retires to bed with Lizzy, Nan learns that Guy had also arrived at Runnymede on horseback that day but chose to turn away after witnessing Richard's proposal. This revelation might stir up Nan's inner turmoil, leaving her conflicted about her true feelings.