Watch Mia for Free: How to Stream the Movie Online at 123Movies. . Mia, an obedient daughter of a piano teacher, challenges her mother’s patience as she grows up and learns more about the life outside her room together with a boy next door. This coming-of-age story, entirely shot from a fixed top-down perspective of Mia’s room, depicts short snippets spanning 16 years of a girl’s life. What begins as a simple daily life of a child slowly turns into a dramatic teen experience, culminating in a decision that took all these years to come to.