I'm a single, dull office worker. There are only married people in the same apartment building, so I don't feel lonely... I'm not! Because I'm having sex with the sexless young wives who are ignored by their husbands in my free time! But the rumor spreads, and I'm a rental dick that the young wives use for their convenience!? I'm asked, "Are you free today?" and I'm flooded with invitations to fuck! Moving up and down the same apartment, an efficient time-saving affair turns into a deep relationship!?