Three months have passed since her husband disappeared, leaving behind debts... Mari and her only son Masaru, who lost their home, were looking for a place to live. - One day, they stop by a condominium that is for sale and a salesman tells them that they are holding a ``trial move-in campaign,'' and for some unknown reason, the two end up living there... - The two of them forget about the bad things and soak in the spacious bathtub. - However, it didn't take long for him to be brought back to reality. - The next day, the salesman visits Mari again...