"Balance matrimonial" narra la historia de una mujer de poco más de 30 años, quien trabaja sólo unas horas como funcionaria, feliz, casada y con un hijo, que un día se siente atraída por cambiar de vida cotidiana: toma contacto fortuitamente con un antiguo compañero de gimnasio e intenta "liberarse" de sus obligaciones como madre y esposa.
The main character has quit school, makes a living by taking pictures. He seduces a nurse who treated his head wound which he earned in a fight. They witness a hit-and-run driver killing a little girl on a sled. He builds up an elaborate trap by putting a doll dressed as a child down the hill in the path of a car. The man hits it and thinking that he hit a child - runs. Marek takes pictures of him and tries to blackmail him to use his car for a week. He wants to use the car to win back the nurse, who could not cope with his humors...