Free Online HD on Lookmovie. A young mother barricades herself inside her home with her little daughter, Bianca. The domestic calm is shattered when a stranger begins knocking insistently at the door. The situation escalates when the woman realizes that someone—having previously sent her threatening messages on social media—has managed to break directly into the apartment. Mother and daughter are thus forced to fight to defend themselves and save their lives from a threat that is as sudden as it is invisible.