Vipère au poing (2004)

Young Jean lives with his grandmother. When his grandmother dies, his parents come back from Indochina. He and his brothers then discover that their mother Paule is a horrible woman, who hates her life and her children. She is extremely severe with them and deliberately unfair to the point of cruelty. Their father is a weak man who submits to his wife's will, and spends his time in entomology studies.