Where can I watch Custody in United States?

Miriam and Antoine have recently separated. While she’s willing to permit their 17-year-old daughter Josephine to decide living arrangements for herself, Miriam is desperate to keep her youngest, 11-year-old Julien, away from his father. But the magistrate rules in favour of joint custody, and suddenly the boy is thrown directly into the middle of an escalating parental conflict, where it seems inevitable that sides must be chosen.