Abandoned by their mother after the death of their father, the Tanguay children were forced to fend for themselves. Older sister Catherine became the surrogate mother for the family and decided to lie to younger sister Isabelle, telling her their mother was dead. Years later, 25-year-old Isabelle has grown up to become an angry woman. As Catherine gathers the Tanguay family at her home for a reunion, Isabelle prepares to confront Catherine.