The neighbors living in different entrances and separated by a common wall, do not give each other a break. One playing the piano irritates the other and he constantly pounds with the fists against the wall to stop it. When meeting outside, the neighbors greet each other cordially and soon they befriend. One day they walk together, afterward they visit the bar. After returning home and hearing the annoying sounds coming from the apartment behind the wall one of them starts throwing objects at the wall, and the other does the same. The wall collapses and they see each other.