Watch Cassy for Free: How to Stream the Movie Online at 123Movies. . Cassy, 9, is obsessed, silent, angry. Recently, she lost her mother to a mysterious accident. Her turmoil clashes with that of her father, a violent man who treats women like objects. While the little girl rediscovers a kind of happiness thanks to a kind vocal instructor, the father’s behaviour grows increasingly erratic. Childhood and grieving confront some hot-button issues when sexual harassment, violence and homophobia enter the scene. Natacha Mitrani, the director’s daughter, is heartbreaking in the challenging role of Cassy.