Even though he's an old man, he doesn't have a wife or children, let alone a girlfriend, so he moves into a share house hoping to meet someone new, and all the girls are cute! It's a dream life! But then he finds himself isolated, unable to keep up with the conversations of the young people... The young people seem to enjoy playing together, but he can't stand being treated like a nuisance every day! When he finds an opportunity, he gives the girls an aphrodisiac... They get turned on in an instant, and turn into sluts who want dicks first! He goes from being hated to being a popular harem in no time!