Asahi Shoji's office girl, Aiko Tatebayashi, is a modern girl of Akira herself. The dentist's father has already cleared up his eldest daughter Keiko to Mizukami, but this time Aiko's turn and her sister's wedding greeting card are handy to add a request for the color of her sister's son. However, Aiko, who wants to be herself, uses the help of her friend, private detective Nobuko Migishi, to break through the behavior of the matchmaker, Mrs. Yamaguchi, who is a matchmaker. However, Nobuko's mistress Rokuro Kojima has become sloppy these days, so when Aiko investigated this time, it was found that the cause was Kojima's best friend Hiroshi Minamimura. Aiko was completely indignant at Minamimura's rude attitude of saying what she thought. In the mouth of Mrs. Yamaguchi's match, Mr. Fumio Kaki, the sales manager, is the best candidate.