Mebel Tanadi is a sixty-three-year-old Chinese-Indonesian woman who has spent her adult life as a self-described trophy wife, a role she calls being a CHIP, or Chinese-Indonesian princess. She lives in a palatial mansion in north Jakarta, Indonesia, with her husband Henk, a real estate tycoon. When Henk announces he is leaving her for Wendy, their twenty-four-year-old private chef, Mebel masks her devastation with sarcastic humor and begs him to stay, but Henk wheels a pre-packed suitcase out the door. Their son Samuel (Sammy), a thirty-four-year-old married man, arrives with his wife Hannah and their three young children to move into the mansion.
Cohabitation proves difficult. Mebel barges into Sammy and Hannah's room each morning with juice, enters the twins' room uninvited, and accidentally drops one of the babies when her back gives out. When Sammy introduces the concept of "boundaries," Mebel is confused and defensive. She withdraws from her social circle, unable to bear anyone learning Henk has left her, and a growing purposelessness overtakes her: She is no longer needed as a wife, and the children's nannies handle routines far better than she can.
After Sammy challenges her to devise a plan rather than passively waiting for Henk, Mebel declares she will attend culinary school, reasoning that learning to cook will win him back. She finds a vacancy at the Saint Honoré School of Culinary Arts, whose name delights her because it shares a name with the Paris street where the Hermès flagship store is located. Despite Sammy's warnings about her uncertain finances, she embarks on a lavish shopping spree and departs for Paris with four suitcases, two carry-ons, and a hatbox.
At the Paris campus, Alain Moreau, the school's handsome director, explains that Mebel has been enrolled at the sister campus in Cowley, a modest town near Oxford, England, because the Paris location has a year-and-a-half-long waitlist. The Cowley branch is a humble converted block of old English houses staffed by a single employee, Agatha, who serves as building manager, registrar, and general caretaker. Two youths steal two of Mebel's suitcases from the curb, and her dorm room is tiny with a sagging bed and a shared bathroom. She cries but resolves to persevere.
Her first week is humbling. She arrives at Culinary Fundamentals, taught by Chef Clarke, wearing a custom Hermès chef's uniform and designer heels, standing out from her much younger classmates. She struggles to cube potatoes, slices her finger, and alienates students by demanding they call her "Ms. Tanadi." Chef Clarke privately tells her she lacks what it takes and should learn from online videos instead.
Stung but defiant, Mebel sneaks into the kitchen that night and practices until she produces perfect cubes. There she meets Gemma, a friendly blond classmate filming cooking videos for social media. Gemma becomes a kind of honorary daughter figure. The next morning, Chef Clarke acknowledges Mebel's improvement. She begins wearing the standard uniform and allowing classmates to use her first name.
Mebel pushes through increasingly difficult coursework with encouragement from Gemma and classmates Adam, Bella, and Bruce. A chance encounter with Alain at his Oxford restaurant, Le Provençal, leads to a group dinner and, eventually, a date. Their relationship deepens over several outings, including a private dinner at Pemberton College, one of Oxford's oldest colleges and Alain's alma mater, where he tells Mebel she is beautiful, the first time a man has applied the word to her rather than to her outfit or accessories. He reveals he is technically still married, though he and his wife live separately. Emboldened by frank conversations with Gemma and Bella about autonomy and pleasure, Mebel sleeps with Alain, and the experience is revelatory. Afterward, noticing papers on his table, she secretly photographs a contract mentioning the Saint Honoré Oxford banquet, an act fueled by the distrust Henk's hidden affair instilled in her.
Mebel excels at the sauces and soups modules and becomes a confidante to her younger friends. She begins dining alone, discovering the pleasure of her own company, and notices the widening gap between her old self, devoted entirely to pleasing Henk, and a new self who thinks independently.
This growth is tested when Chef Clarke announces a competition: The first-year students will cater the Pemberton College Ball in pairs, with the winning pair earning a cash prize and a position at Canard et Vin, a three-Michelin-star restaurant in Paris. Mebel partners with Gemma for the poultry course and, for the first time, asserts her own preference: duck. The competitive atmosphere turns toxic, and Gemma disappears overnight, withdrawing without explanation. Forced to work alone, Mebel develops a dry-aged duck confit, a French technique of slow-cooking in fat, flavored with orange peel and brown sugar syrup. She then learns classmates have copied her exact flavor combination. She tracks Gemma to a cottage in the Cotswolds. Gemma insists she left because the atmosphere was unbearable but helps Mebel redesign the dish with Chinese five-spice, soy sauce, and clover honey, topped with crumbled crunchy duck skin and served in a Chinese crepe with hoisin sauce, fusing Peking duck tradition with French confit technique.
Meanwhile, Mebel's family arrives unexpectedly. Henk reveals Wendy has left him and says he wants Mebel back. Recognizing that Henk only softened because he believed her journey was for his sake, Mebel refuses and announces she wants a divorce. Sammy calls her selfish, but Mebel points out the double standard: When Henk wanted the divorce, Sammy supported it. She scolds Sammy for being a spoiled son, tells Hannah to raise the girls differently, and strides out of the hotel exhilarated, though she staggers against a wall outside, shaken by the enormity of what she has done.
Mebel spends her remaining weeks perfecting the dish in solitary evening sessions that become a meditative sanctuary. When she drives to Gemma's cottage to taste the finished dish together, Gemma reveals the true reason she left the school: Alain kissed her after she sought his professional advice, and when she rejected him, he threatened to blacklist her from every reputable restaurant in Europe. Mebel vows to expose him. Back at school, she confronts Agatha, who confirms that many female students have vanished over the years after Alain's visits. Mebel reviews her photographs of Alain's contract and discovers the competition prize requires the winner to work at Canard et Vin for five years, with anything created during that period belonging to the restaurant. With Agatha's help, Mebel collects signed testimonies from over a dozen former students documenting Alain's harassment.
At the Pemberton College Ball, Mebel wins the competition. At the podium, she tells the audience she cannot accept the prize, reveals the exploitative contract, and credits Gemma as the creative force behind the dish. When Alain ushers her offstage, Agatha takes the microphone and reads the signed statement accusing him of harassment and coercion. Chef Clarke orders Alain to leave.
In the epilogue, set in late January, Mebel returns to Jakarta, hires a lawyer, and begins divorce proceedings. She sorts through her luxury wardrobe with Hannah, planning to sell items and funnel the proceeds to her daughter-in-law to start a business. Their recreation of the Peking duck confit, filmed at Gemma's cottage, goes viral with over two million views. Alain returns to France, where more women come forward with allegations. Mebel and Gemma enroll together at the London School of Culinary Arts, and Mebel walks in with a bright smile, ready to experience life on her own terms.