Johanne Sacreblu, Camila Aurora González a trans woman formerly known as Jonathan Sacreblu, returns to Villa Croissant—a picturesque French town—from a stint as a rancher in Mexico. Her family, who run France's largest baguette shop and have appointed Johanne as their heir, grow furious at her transition, fearing it would look bad for the business even as she insists she does not want the role. The Sacreblu family's rival, the Ratatouille family, who run France's largest croissant shop, berate their son Yeylan Torres Agtugo, a trans man, for being born a woman. Both households decide to settle their feud through a bread-making competition.
That night, Johanne talks to her friend Emily and Marie Antoinette's ghost about her reluctance toward the contest and her discomfort with France's pervasive discrimination. The next day brings the first round, hosted by Ladybug and Cat Noir, where Johanne and Agtugo are pitted against each other in a footrace to the Eiffel Tower (screened as a tower resembling a radio mast in Mexico City). Johanne emerges victorious, while Agtugo is publicly scorned by his family for losing. Later that night, a man named Jacques Audiard laments being treated like garbage.
Johanne and Agtugo meet again, sharing a vow to combat racism and sexism in their country. The pair fall in love and plan to tie in the next round, which involves a controversial goal: deporting Muslims to spread their message. They do tie during the round, but government leaders refuse to accept the result and demand a baguette duel to the death.
The duel unfolds in the style of a silent film. When Johanne and Agtugo refuse to duel publicly, French ambassador Papa Johns arrives with Agtugo's brother Chofls and Johanne's family butler Wigles, threatening to kill them with French fries. After he stabs Agtugo, Johanne reveals that Papa Johns is controlled by a rat on his head. Papa Johns admits this, explaining that he uses the rat's secrets for evil. Wigles then kills Papa Johns, revealing that his willingness to work with him stemmed from Stockholm syndrome.
Sometime later, Johanne is interviewed about the incident. She reveals a gift from Mexico—the cake she brought back—and the film ends with a freeze-frame as she prepares to slam the cake into the interviewer’s face. In a post-credits scene, Johanne's mother finishes recounting the story to Johanne and Agtugo's son, tenderly singing a song about how bad he smells (a satirical nod to a famous song about a father’s scent).
