Mauritius is a dark comedy centred around Jackie, a 22-year-old woman who’s lived a sheltered life caring for her abusive mother, who’s just passed after a long illness. She’s left a book of stamps, which may or may not be valuable/fake and may or may not legally belong to her older half-sister Mary, a sophisticated woman who’s been absent through the years of their mother’s illness. When Jackie makes a secret deal with shady characters, she unleashes deep resentment among all involved.