Josip and Mia are in a relationship: he abuses her both verbally and physically, even though she is pregnant. During an argument, Josip pushes Mia through a plate-glass door and, ignoring her injuries, carries on shouting at her. A pizza delivery boy interrupts them, and while Josip is distracted, Mia grabs her chance and runs away. Josip blackmails Mia into returning to the apartment. There he subjects her to more of the same torment. Their fight is interrupted by the ringtone of a cell phone. A sound whose associations for Josip could explain his behaviour...