A terminally ill father lives on the sixth floor with his son, who is disabled, and in order to enable his son to go downstairs on his own after his death, the father contacted other property owners and tried to persuade them to install an elevator. However, due to a veto system, the elevator could not be installed. The father had no choice but to use the money from his medical treatment to exchange his house with the first floor. A year later, the father had passed away and the matter of installing an elevator was brought up again. The son who lived on the first floor voted against it.