Un conte de Noël
Junon Vuillard is Abel Vuillard's wife, and the iron-willed matriarch of the Vuillard family. Junon held her family together through many tough times, and although her willpower helped the family survive and prosper, it also has left many bad feelings among her children. Junon is still a handsome woman, and though her husband (who owns a small fabric dying plant) has become obese and clearly aged, he retains a remarkable clarity, acceptance, tolerance, and unconditional love for his family, and it is clear that he and their love for each other is the lynchpin that holds an otherwise fragmented family together, albeit uneasily.
The couple has three children, all grown and in their 30s. Their eldest daughter is Elizabeth, who is a successful playwright who is married to an equally successful man, Claude. They have one child, 16-year-old Paul, who is mentally ill and taking powerful medication to control his psychiatric problems. The couple's middle son is Henri, who drinks too much and has always fought and argued with other members of the family. He has a new girlfriend, Faunia. Ivan is the couple's youngest son. He is married to Sylvia, and they have two sons, Basile and Baptiste. Henri and Ivan are close friends with Simon, their cousin who was raised with them after the death of his parents. Simon works in Abel's small fabric dying plant, but is an avid and skilled painter in his spare time. He is also an alcoholic who has gotten in trouble many times for brawling in public. All three men dated or were interested in Sylvia at one time, but they manipulated her to think that only Ivan loved her; she married him and grew to love him. The Vuillard family's other son, Joseph, never appears alive in this film but is its core throughout, and the presence around which everyone's psyches revolve: he died of leukemia when he was six years old, despite a desperate effort to save his life by procreating another child who could be a bone marrow donor for him. It may be that part of the siblings' poor relationship is the resentment they feel toward one another for not saving Joseph's life.
Six years prior to the Christmas gathering that is the heart of this film, Henri faced bankruptcy. Elizabeth paid off his debts, but demanded that he never see her again, meaning he was left out of family gatherings as well. Henri kept his promise. The specific reason (if there is one) for this banishment remains unanswered to the very end, but there is much speculation on the part of the family members throughout the film about what precipitated it, including incest.
Just before Christmas, Junon learns that she, too, has leukemia and does not have long to live, though she is offered the potential of a longer lifespan if she gets a bone marrow transplant. Her family gathers at the Vuillard home in Roubaix, a small city in the north of France. The family immediately falls to bickering. Junon asks her children if one of them (or possibly Paul) will donate bone marrow to her that will allow her to survive. Henri and Elizabeth cruelly fight with one another, and Henri begins drinking heavily and hides Paul's medication. Paul fears that the blood test he will have to undergo may also reveal that his father is not his biological parent. Henri initially refuses to have the blood test, because, he claims, he has never loved his mother. Faunia, who is Jewish, has agreed to spend some time with the Vuillards before leaving to spend the holiday with her own family. Her honesty and gentleness have a moderating impact on Henri, and she manages to spend two days with the family before finally leaving.
On 23 December, Rosaimée visits the family for dinner and fireworks. Rosaimée was Abel's mother's friend, although it is suggested that perhaps the two women were lesbian lovers rather than "just friends." Rosaimée tells Sylvia that Simon stopped seeing Sylvia because he believed that she would be happier if she fell in love with Ivan. This deeply upsets Sylvia, who feels betrayed and manipulated by Simon. Henri finally has the blood test without anyone's knowledge, and discovers he can be a donor. He decides to do so despite his coldness toward his mother. Simon disappears on Christmas Eve and begins drinking heavily in local cafes, and the entire family rushes out into the snow to find him. Sylvia discovers him in a distant cafe, and she confesses that she knows Simon loves her. She and Simon spend several hours talking, then return to the Vuillard home and make love. Paul tries to tell Henri about his fears. Henri convinces him that he is not his father, a fact reinforced by the blood test, and reassures Paul that he is not a moral failure for being afraid. The man and boy begin to bond, and Paul begins to improve almost overnight. On Christmas Day, Abel and Elizabeth discuss Elizabeth's longstanding depression, and Abel reads to her from the prologue to Friedrich Nietzsche's On the Genealogy of Morality about how well we know – or don't know – ourselves. Abel suggests that Elizabeth fears death, and that has led to her caution and depression.
The film ends with Ivan casually discovering that his wife has had sexual intercourse with Simon (they make no real effort to hide it, waking up together in bed the next day and greeting her children from there as they come bearing tea), but the effect on him is not revealed – he seems remarkably blase, almost as though he has expected that this would happen one day. Sylvia seems to love Simon just as he loves her, and it is suggested that the two have agreed to become lovers. Paul decides to stay behind with Henri, who is having a positive effect on his mental health. Henri donates his bone marrow to Junon, but she announces, seemingly before there would be medical evidence of this, that her body will reject the transplant. Elizabeth speculates that Junon will live, but Henri is shown flipping a coin in the hospital in front of his mother and not revealing the answer.
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