In the French countryside near the
Pyrenees, a baby donkey is adopted by young children—Jacques and his sisters—who live on a farm. They
baptize the donkey, christening him Balthazar, along with Marie, Jacques' childhood sweetheart, whose father is the teacher at the small school next door. When one of Jacques' sisters dies, his family vacates the farm, and Marie's family takes Balthazar over in an informal arrangement. Balthazar is given to local farmhands, who work him relentlessly. Years pass until Balthazar is involved in an accident and runs off, eventually finding his way back to Marie, now a teenager. Marie's father becomes embroiled in legal disputes over the farm with Jacques' father, and Balthazar is given to a local bakery for delivery work. Gérard, the leader of a young criminal gang, works as a delivery boy at the bakery. Jealous of Balthazar because of Marie's affection for the donkey, he takes charge of him and treats him cruelly. One day, while driving a
2CV, Marie spots Balthazar by the roadside and stops to greet him. Gérard, who had been sleeping nearby, gets into her car and refuses to leave despite her demands. It is implied that Gérard sexually assaults her after she gives up trying to flee, and afterward, she drives home. Marie enters into an abusive relationship with the violent Gérard, leaving her parents behind. Gérard is later summoned to the local police station and questioned about a murder, along with Arnold, an alcoholic who is also a suspect. Neither is arrested. Gérard and his gang assault Arnold, accusing him of being a murderer and a snitch. Meanwhile, Balthazar falls ill and spends several months lying down in a state of despair, completely unable to move. Gerard prepares to kill Balthazar by bludgeoning him to death, but Arnold intervenes and takes Balthazar under his care. Balthazar recovers, and Arnold uses the donkey, along with another, to guide tourists around the Pyrenees. When the tourist season ends, Balthazar escapes and is taken by a circus. When Balthazar spots Arnold in the audience, he becomes agitated, and Arnold retrieves him. Arnold's uncle dies, leaving him a fortune. He throws a wild party at a bar, where Marie and her mother talk, and Marie is asked to return home. She refuses. Gérard places Arnold on Balthazar's back to ride home, but Arnold, too drunk to stay upright, falls off, hits his head, and dies. The police send Balthazar to market, where a greedy local miller buys Balthazar, exploiting him for pumping water and milling grain. One rainy night, Marie, soaked and desperate, knocks on the miller's door, seeking shelter after running away from Gérard. The miller offers to be her companion and help her escape, as she confides in him her desire to "run away." However, the next morning, he approaches her parents and offers them Balthazar, implying that Marie will follow. Marie returns to her parents. Jacques visits, expressing his desire to marry her. When Marie reveals the abuse she has endured, Jacques remains steadfast in his intentions. He also informs her that his father no longer wants the money the court ordered Marie's father to pay. Marie is conflicted, unsure whether she is angry with Jacques or wants to be with him. She declares her intention to confront Gérard and visits a barn where they used to meet. Gérard is there with his gang, and they strip her, beat her, and lock her inside. Marie's father and Jacques find her and break a window to rescue her. They take her home in a cart pulled by Balthazar. Later, Jacques wishes to see Marie, but her mother informs him, "She's gone and will never come back." Shortly after, Marie's father dies during a visit from a priest. As Marie's mother grieves, Gérard arrives with his gang and asks to borrow Balthazar. Marie's mother refuses, as Balthazar is meant to carry the ashes of Marie's father in his funeral procession. That night, Gérard abducts Balthazar to transport contraband across the Spanish border. When Gérard and his accomplice meet their contact, they are ambushed by customs guards, who open fire. The two flee, abandoning Balthazar to his fate. By morning, Balthazar is seen with a gunshot wound. As a shepherd and his flock approach, the sheep gather around Balthazar, their bells jingling. He lies down and dies. ==Cast==