Arthur is a charming, carefree wanderer whose life revolves around spontaneity, pleasure, and the art of seduction. Known for his insatiable appetite for intimacy and his relaxed attitude toward societal norms, he drifts through life leaving a trail of enamored lovers in his wake. The central conflict of the story begins when Arthur receives an unexpected summons from his estranged, wealthy sister, Beatrice. Following the sudden passing of their enigmatic uncle, Arthur is required to return to the sprawling, secluded
family estate to attend the reading of the sprawling inheritance and sort through the complicated family legacy.Upon his arrival, Arthur is immediately struck by the oppressive, rigid atmosphere of the mansion. Beatrice has lived a sheltered, meticulously structured life, married to a cold, distant husband who cares more for business than passion. Beatrice resents Arthur’s liberated lifestyle, viewing him as a reckless reminder of everything she repressed. However, the rest of the household, including the fiercely independent
estate manager, Hélène, and the curious young maid, Chloe, are instantly captivated by Arthur’s charismatic and uninhibited presence.Tensions flare during the formal reading of the will, which reveals a bizarre stipulation: Arthur and Beatrice must inhabit the estate together and resolve a series of eccentric riddles left by their uncle to claim their respective fortunes. If they fail, the estate will be entirely liquidated. This forced proximity acts as a catalyst for explosive drama and intense romantic encounters. As Arthur delves deeper into the uncle's past, he discovers secret rooms filled with erotic art and journals detailing a philosophy of absolute personal freedom—values that Arthur wholeheartedly embodies, but which challenge the rigid foundation of Beatrice's marriage.Throughout the following weeks, the manor transforms from a house of mourning into a hotbed of clandestine affairs, repressed desires bubbling to the surface. Arthur initiates a passionate liaison with Hélène, who uses their physical connection to break free from her emotional numbness, while Chloe eagerly seeks Arthur’s mentorship in the art of romantic conquest. Beatrice, initially scandalized by her brother's influence over her staff, finds herself secretly drawn to the liberated atmosphere. In a climactic confrontation, Beatrice confesses her deep unhappiness, prompting Arthur to offer her both comfort and a radical path toward self-discovery.Ultimately, the siblings solve the final riddle, unlocking not just a massive financial payout, but a newfound emotional liberation. Rather than selling the estate, they agree to transform it into a sanctuary for pleasure and artistic expression. The film concludes with Arthur preparing to move on to his next adventure, confident that he has permanently altered the lives of everyone in the household, leaving them forever changed by his unforgettable visit.